Get chatflow by ID endpoint returns 500 when it should return 4xx

[salimzdn]

Describe the bug

The chatflow API does not work as expected and as described in the documentation.

When getting chatflow by ID, with an invalid id, or a not existing id, instead of receiving a 400 or a 404 status code, status code is 500 with the following response

{ "statusCode": 500, "success": false, "message": "Error: chatflowsService.getChatflowById - Chatflow e not found in the database!", "stack": {} }

To Reproduce

Getting chatflow by ID, with an invalid id

1. Use chatflow - Get chatflow by ID endpoint : .../chatflows/invalid-id
2. Response is an error with statusCode 500 instead of 400

Getting chatflow by ID, with a not existing id

1. Use chatflow - Get chatflow by ID endpoint : .../chatflows/dafb70a2-c258-4a36-ae81-2a401c7cd147 (where no chatflow has this id)
2. Response is an error with statusCode 500 instead of 404

Expected behavior

Getting chatflow by ID, with an invalid id

• Expected statusCode is 400

Getting chatflow by ID, with a not existing id

• Expected statusCode is 404

Screenshots

No response

Flow

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Use Method

None

Flowise Version

No response

Operating System

None

Browser

None

Additional context

No response

[aibysid]

This PR should fix it

[salimzdn]

I would add that this error also happens for many APIs and not only for the chatflow API, a more global fix could be applied