Can not upload attachement to webdav (nextcloud)

Description:

I set up my nextcloud server into RC. I can send files from NC to RC but I can not save attachment to my NC.
"Error while loading file"

Steps to reproduce:

1. Add a nextcloud server to my account: plus sign near message box, add server
2. On a messge with attachment, click on three dots, save to webdav
3. Error...

Expected behavior:

The file must be uploaded to nextcloud

Actual behavior:

"Error while loading file"

Server Setup Information:

• Version of Rocket.Chat Server: 7.5.1
• License Type: community
• Number of Users:
• Operating System:
• Deployment Method:
• Number of Running Instances:
• DB Replicaset Oplog:
• NodeJS Version:
• MongoDB Version:

Client Setup Information

• Desktop App or Browser Version: 4.1.4 (tested on desktop app and browser)
• Operating System:

Additional context

Relevant logs:

{"level":50,"time":"2025-04-13T13:58:23.227Z","pid":1,"hostname":"tchat-rocketchat-85bfbb6747-tfnxp","name":"WebDAV_Upload","err":{"type":"TypeError","message":"The first argument must be of type string or an instance of Buffer, ArrayBuffer, or Array or an Array-like Object. Received an instance of Object","stack":"TypeError [ERR_INVALID_ARG_TYPE]: The first argument must be of type string or an instance of Buffer, ArrayBuffer, or Array or an Array-like Object. Received an instance of Object\n    at Function.from (node:buffer:325:9)\n    at uploadFileToWebdav (app/webdav/server/lib/uploadFileToWebdav.ts:14:24)\n    at processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at MethodInvocation.uploadFileToWebdav (app/webdav/server/methods/uploadFileToWebdav.ts:39:4)\n    at app/lib/server/lib/debug.js:85:20","code":"ERR_INVALID_ARG_TYPE"},"msg":"The first argument must be of type string or an instance of Buffer, ArrayBuffer, or Array or an Array-like Object. Received an instance of Object"}

Start in app/webdav/server/lib/uploadFileToWebdav.ts and trace its call from app/webdav/server/methods/uploadFileToWebdav.ts. Use the reported WebDAV upload flow and error as the starting case, then verify that saving a message attachment to Nextcloud completes without the loading error.