docs: add new troubleshooting section for create-medusa-app (#6071)

* docs: add new troubleshooting section for create-medusa-app

* small fixes

www/apps/docs/content/create-medusa-app.mdx

@@ -18,6 +18,7 @@ import EaddrinuseSection from './troubleshooting/eaddrinuse.md'
 import InvalidTokenError from './troubleshooting/create-medusa-app-errors/_no-browser-token-error.md'
 import PostgresDockerError from './troubleshooting/database-errors/_docker.md'
 import DbUrlError from './troubleshooting/create-medusa-app-errors/_db-url-error.md'
+import PortError from './troubleshooting/create-medusa-app-errors/_port.md'
 
 # Install Medusa with create-medusa-app
 
@@ -218,6 +219,10 @@ Based on what you're building, you can find a development path for you in the Re
 
 <DetailsList
   sections={[
+    {
+      title: "Admin Login or User Errors",
+      content: <PortError />
+    },
     {
       title: 'Can\'t connect to database with --db-url option',
       content: <DbUrlError />