docs: added a note about db user create privilege (#4584)

* docs: added a note about db user create privilege

* added troubleshooting section

docs/content/development/backend/configurations.md

@@ -70,6 +70,10 @@ DATABASE_URL=<YOUR_DATABASE_URL>
 
 Where `<YOUR_DATABASE_URL>` is the URL of your PostgreSQL database.
 
+#### Database User Privileges
+
+The database user that you use must have create privileges. If you're using the `postgres` superuser, then it should have these privileges by default. Otherwise, make sure to grant your user create priviliges. You can learn how to do that in [PostgreSQL's documentation](https://www.postgresql.org/docs/current/ddl-priv.html).
+
 ### Changing PostgreSQL Schema
 
 By default, the `public` schema is used in PostgreSQL. You can change it to use a custom schema by passing the `search_path` option in the database URL. For example:

docs/content/troubleshooting/database-error.mdx

@@ -4,6 +4,7 @@ title: 'Database Errors'
 
 import SaslSection from './database-errors/_sasl.md'
 import ConnectionErrorSection from './database-errors/_connection-error.md'
+import PrivilegesSection from './database-errors/_privileges.md'
 
 ## Error: SASL: SCRAM-SERVER-FIRST-MESSAGE: Client password must be a string
 
@@ -13,4 +14,10 @@ import ConnectionErrorSection from './database-errors/_connection-error.md'
 
 ## Error: connect ECONNREFUSED ::1:5432
 
-<ConnectionErrorSection />
+<ConnectionErrorSection />
+
+---
+
+## Database User Privileges
+
+<PrivilegesSection />

docs/content/troubleshooting/database-errors/_privileges.md

@@ -0,0 +1,3 @@
+The database user you use in the `database_url` Medusa backend configuration must have create privileges. Otherwise, you'll face problems when running migrations.
+
+If you're using the `postgres` superuser, then it should have these privileges by default. Otherwise, make sure to grant your user create privileges. You can learn how to do that in [PostgreSQL's documentation](https://www.postgresql.org/docs/current/ddl-priv.html).