Help，File upload failed during API calls in the new Dify version 1.15.0

[liuliu27]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

I'm using the latest Dify version 1.15.0 and have run into an issue when calling the Chatflow API. My workflow is as follows: I first invoke the file upload API, then call the Chatflow API afterwards, but the response I receive is "Invalid upload file". Could you tell me what might be causing this error?

2. Additional context or comments

No response

[liuliu27]

I might have found the root cause of the issue. The problem arises because the user parameter (username) I passed in the two separate API calls was inconsistent. I failed to spot this during troubleshooting earlier, as everything worked fine with older Dify versions without any errors. This inconsistency only triggered a failure after upgrading to version 1.15.0.