PluginInvokeError: {"args":{},"error_type":"APIError","message":"if content is list. item must be dict and key[type] should in dict"}

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Dify version

1.13.2

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

In chatflow workflow, use the document extractor to extract Excel data and enter LLM error:

req_id: d608032dde PluginInvokeError: {"args":{},"error_type":"APIError","message":"if content is list. item must be dict and key[type] should in dict"}

But there is no error in the same steps on the cloud

✔️ Expected Behavior

❌ Actual Behavior

No response

Start by reproducing the document extractor workflow with Excel input in the self-hosted Docker setup, then compare it with the cloud behavior and trace the plugin invocation producing the APIError. Done means the same workflow no longer returns the reported content-list error in self-hosted use, with the relevant regression coverage added if an existing test location is found.