Cannot Upload docx document to Milvus Database because of DOCXMetadata

[saikanov]

Describe the bug
Cannot upload docx file to Milvus database because of DOCXMetadata

Error message
TypeError: 'DOCXMetadata' object is not subscriptable

Additional context
Add any other context about the problem here, like document types / preprocessing steps / settings of reader etc.

To Reproduce
Use DOCX pipeline with Milvus as vectordb

So i already fix this issue at the time i post this, the issue is about the DOCXMetadata cannot be indexed, and after knowing the issue i try to pop(delete) the metadata and it works fine.

after that i go to [haystack/components/converters/docx.py ](https://github.com/deepset-ai/haystack/blob/main/haystack/components/converters/docx.py)

and edit the merged_metadata variable so it not include the DOCXMetadata
merged_metadata = {**bytestream.meta, **metadata}

and now it work with Pipeline

The thing i want to ask is, what is DOCXMetadata do? does it only error on milvus? and is it fine to not include it to resolve my issue?

Thanks!