upload document embedding error & After deleting the failed document, the knowledge base will still retain the content of the failed document

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Dify version

0.6.11

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

1.when i upload a pdf, web show error then i saw ollama log and i review pdf, i seems like There are multiple line breaks on the last page of the document

2. When I delete the PDF that failed to upload, I can still retrieve records in the knowledge base(At least one other file in the knowledge base,otherwise no records will be queried)

✔️ Expected Behavior

1.upload pdf success 2.If the PDF upload fails, the records in the library can be deleted completely

❌ Actual Behavior

1. upload pdf error
2. delete upload records, there are still residual records in the knowledge base