Failed uploading file via Firefox Windows

Hi, I’ve installed NC 13.0.5 using Docker container and nginx as proxy on Ubuntu 18.04. When trying to upload file larger than 6 MBs progress bar get stuick and I get an error in console: TypeError: xml is undefined in merged-index.js:644:1
NCs logs are empty, no apps installed. I have no ideas :frowning:

same issue :’(