ERROR cannot load pdf doc in client account under past encounter and documents

Situation

  1. In a client account under menu “documents” when f.i. a pdf document saved in a category (saved before the patch was installed), when selecting document: ERROR cannot load pdf. Load again.

a. Via the FTP in the file defaults->documents where the pdf documents related to a client are stored, the pdf is still there and readable, however, for some documents the extension changed from pdf to 93f217ce-d73a-4341-8c0c-951c8198741a document.

b. After the patch: when uploading a new pdf document in the client account itself to a category, the pdf can be opened again after logging out and logging in. However, via the FTP-access the extension has been changed from pdf to 93f217ce-d73a-4341-8c0c-951c8198741a document.

OpenEMR Version
v6.0.0 (2)

Browser:
I’m using: Chrome

Operating System
I’m using: Windows 10

Logs
Did you check the logs? yes
Was there anything pertinent in them? No
Please paste them here (surround with three backticks (```) for readability.
You can also turn on User Debugging under Administration->Globals->Logging User Debugging Options=>All