Hi Omar,
We need additional information to check further. So, could you please share us the below things at your end:
1. How did you generate the provided base64 string?
2. Input Word documents which used at your end.
This will be more helpful to proceed further and provide you the solution at the earliest.
Note: If you have any confidential data in your document, please replace with some dummy data and provide us the same. We just need your document to recreate the problem you face.
Please let us know if you have any other questions.
Regards,
Kurthis Banu A