docs: add new troubleshooting guides for Query and middlewares (#12214)
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A common mistake when creating middlewares is naming the file `middleware.ts` rather than `middlewares.ts`.
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If your middleware isn't registered correctly, make sure you've created the middleware file at `src/api/middlewares.ts`.
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Learn more in the [Middleware](!docs!/learn/fundamentals/api-routes/middlewares) documentation.
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import { CodeTab, CodeTabs } from "docs-ui"
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If you get the following error while using `query.graph` or `useQueryGraphStep`:
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```bash
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Expression produces a union type that is too complex to represent. ts(2590)
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```
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## Why this Error Occurred
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This type error may occur when you use Query, but it's only a type error that doesn't affect the functionality of your code. It occurs because the models you're retrieving may be too complicated for the TypeScript compiler to infer the types correctly.
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---
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## How to Fix it
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You can ignore this error by using the `// @ts-ignore` directive before the line of code that produces the error. For example:
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<CodeTabs group="query">
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<CodeTab label="query.graph" value="query.graph">
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```ts
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// @ts-ignore
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const { data } = await query.graph({
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// ...
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})
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```
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</CodeTab>
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<CodeTab label="useQueryGraphStep" value="useQueryGraphStep">
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```ts
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// @ts-ignore
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const { data } = useQueryGraphStep({
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// ...
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})
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```
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</CodeTab>
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</CodeTabs>
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@@ -1,4 +1,4 @@
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import AdditionalDataError from "../_sections/api-routes/additional-data.mdx"
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import AdditionalDataError from "../../_sections/api-routes/additional-data.mdx"
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export const metadata = {
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title: `Unrecognized fields \`additiona_data\` Error`,
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@@ -0,0 +1,13 @@
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import MiddlewareFileName from "../../_sections/api-routes/middleware-file-name.mdx"
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export const metadata = {
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title: `Middleware Registration Troubleshooting`,
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}
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# {metadata.title}
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This troubleshooting guide will help you debug why your middleware is not being registered correctly.
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## Incorrect Middleware File Name
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<MiddlewareFileName />
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@@ -0,0 +1,9 @@
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import ExpressionTypeError from "../../_sections/query/expression-type-error.mdx"
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export const metadata = {
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title: `Error: Expression produces a union type that is too complex to represent`,
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}
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# {metadata.title}
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<ExpressionTypeError />
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@@ -6059,7 +6059,6 @@ export const generatedEditDates = {
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"app/storefront-development/cart/totals/page.mdx": "2025-03-27T14:47:14.252Z",
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"app/storefront-development/checkout/order-confirmation/page.mdx": "2025-03-27T14:29:45.669Z",
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"app/how-to-tutorials/tutorials/product-reviews/page.mdx": "2025-04-17T08:48:08.716Z",
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"app/troubleshooting/api-routes/page.mdx": "2025-03-21T07:17:56.248Z",
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"app/troubleshooting/data-models/default-fields/page.mdx": "2025-03-21T06:59:06.775Z",
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"app/troubleshooting/medusa-admin/blocked-request/page.mdx": "2025-03-21T06:53:34.854Z",
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"app/troubleshooting/nextjs-starter-rewrites/page.mdx": "2025-03-21T07:09:08.901Z",
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@@ -6146,5 +6145,8 @@ export const generatedEditDates = {
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"references/types/interfaces/types.IFulfillmentProvider/page.mdx": "2025-04-11T09:04:46.137Z",
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"references/user/types/user.Message/page.mdx": "2025-04-11T09:04:52.767Z",
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"app/infrastructure-modules/workflow-engine/how-to-use/page.mdx": "2025-03-27T14:53:13.311Z",
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"references/core_flows/Notification/Steps_Notification/functions/core_flows.Notification.Steps_Notification.notifyOnFailureStep/page.mdx": "2025-04-17T08:42:33.837Z"
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"references/core_flows/Notification/Steps_Notification/functions/core_flows.Notification.Steps_Notification.notifyOnFailureStep/page.mdx": "2025-04-17T08:42:33.837Z",
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"app/troubleshooting/api-routes/additional-data-error/page.mdx": "2025-03-27T17:39:10.858Z",
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"app/troubleshooting/api-routes/middleware-registration/page.mdx": "2025-04-17T10:35:42.095Z",
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"app/troubleshooting/query/expression-type-error/page.mdx": "2025-04-17T10:30:39.317Z"
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}
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@@ -1264,8 +1264,12 @@ export const filesMap = [
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"pathname": "/tools"
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},
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{
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"filePath": "/www/apps/resources/app/troubleshooting/api-routes/page.mdx",
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"pathname": "/troubleshooting/api-routes"
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"filePath": "/www/apps/resources/app/troubleshooting/api-routes/additional-data-error/page.mdx",
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"pathname": "/troubleshooting/api-routes/additional-data-error"
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},
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{
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"filePath": "/www/apps/resources/app/troubleshooting/api-routes/middleware-registration/page.mdx",
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"pathname": "/troubleshooting/api-routes/middleware-registration"
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},
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{
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"filePath": "/www/apps/resources/app/troubleshooting/cors-errors/page.mdx",
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@@ -1319,6 +1323,10 @@ export const filesMap = [
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"filePath": "/www/apps/resources/app/troubleshooting/page.mdx",
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"pathname": "/troubleshooting"
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},
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{
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"filePath": "/www/apps/resources/app/troubleshooting/query/expression-type-error/page.mdx",
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"pathname": "/troubleshooting/query/expression-type-error"
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},
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{
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"filePath": "/www/apps/resources/app/troubleshooting/query/filter-linked/page.mdx",
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"pathname": "/troubleshooting/query/filter-linked"
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@@ -69,15 +69,31 @@ const generatedgeneratedTroubleshootingSidebarSidebar = {
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"type": "category",
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"title": "Framework",
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"initialOpen": true,
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"children": [
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{
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"loaded": true,
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"isPathHref": true,
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"type": "sub-category",
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"title": "API Routes",
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"children": [
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{
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"loaded": true,
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"isPathHref": true,
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"type": "link",
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"path": "/troubleshooting/eaddrinuse",
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"title": "EADDRINUSE Error",
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"title": "Unrecognized Additional Data",
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"path": "/troubleshooting/api-routes/additional-data-error",
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"children": []
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},
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{
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"loaded": true,
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"isPathHref": true,
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"type": "link",
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"title": "Middleware Registration",
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"path": "/troubleshooting/api-routes/middleware-registration",
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"children": []
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}
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]
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},
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{
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"loaded": true,
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"isPathHref": true,
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@@ -86,6 +102,14 @@ const generatedgeneratedTroubleshootingSidebarSidebar = {
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"title": "Database Errors",
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"children": []
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},
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{
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"loaded": true,
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"isPathHref": true,
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"type": "link",
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"path": "/troubleshooting/eaddrinuse",
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"title": "EADDRINUSE Error",
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"children": []
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},
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{
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"loaded": true,
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"isPathHref": true,
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@@ -100,6 +124,14 @@ const generatedgeneratedTroubleshootingSidebarSidebar = {
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"type": "sub-category",
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"title": "Query",
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"children": [
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{
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"loaded": true,
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"isPathHref": true,
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"type": "link",
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"path": "/troubleshooting/query/expression-type-error",
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"title": "Expression Type Error",
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"children": []
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},
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{
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"loaded": true,
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"isPathHref": true,
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@@ -107,9 +139,25 @@ const generatedgeneratedTroubleshootingSidebarSidebar = {
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"path": "/troubleshooting/query/filter-linked",
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"title": "Not Exising Property",
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"children": []
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},
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{
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"loaded": true,
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"isPathHref": true,
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"type": "link",
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"path": "/troubleshooting/query/service-list",
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"title": "service.list Error",
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"children": []
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}
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]
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},
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{
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"loaded": true,
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"isPathHref": true,
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"type": "link",
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"path": "/troubleshooting/test-errors",
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"title": "Test Errors",
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"children": []
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},
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{
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"loaded": true,
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"isPathHref": true,
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@@ -133,14 +181,6 @@ const generatedgeneratedTroubleshootingSidebarSidebar = {
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"children": []
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}
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]
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},
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{
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"loaded": true,
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"isPathHref": true,
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"type": "link",
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"path": "/troubleshooting/test-errors",
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"title": "Test Errors",
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"children": []
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}
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]
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},
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@@ -46,17 +46,33 @@ export const troubleshootingSidebar = [
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type: "category",
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title: "Framework",
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initialOpen: true,
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children: [
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{
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type: "sub-category",
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title: "API Routes",
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children: [
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{
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type: "link",
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path: "/troubleshooting/eaddrinuse",
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title: "EADDRINUSE Error",
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title: "Unrecognized Additional Data",
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path: "/troubleshooting/api-routes/additional-data-error",
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},
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{
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type: "link",
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title: "Middleware Registration",
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path: "/troubleshooting/api-routes/middleware-registration",
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},
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],
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},
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{
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type: "link",
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path: "/troubleshooting/database-errors",
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title: "Database Errors",
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},
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{
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type: "link",
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path: "/troubleshooting/eaddrinuse",
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title: "EADDRINUSE Error",
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},
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{
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type: "link",
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path: "/troubleshooting/dist-imports",
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@@ -66,13 +82,28 @@ export const troubleshootingSidebar = [
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type: "sub-category",
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title: "Query",
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children: [
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{
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type: "link",
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path: "/troubleshooting/query/expression-type-error",
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title: "Expression Type Error",
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},
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{
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type: "link",
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path: "/troubleshooting/query/filter-linked",
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title: "Not Exising Property",
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},
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{
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type: "link",
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path: "/troubleshooting/query/service-list",
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title: "service.list Error",
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},
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],
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},
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{
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type: "link",
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path: "/troubleshooting/test-errors",
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title: "Test Errors",
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},
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{
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type: "sub-category",
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title: "Workflows",
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@@ -89,11 +120,6 @@ export const troubleshootingSidebar = [
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},
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],
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},
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{
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type: "link",
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path: "/troubleshooting/test-errors",
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title: "Test Errors",
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},
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],
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},
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{
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