Roxy Fileman - error 4.50.3

Yidna wrote:
Yes, it was changed in the 4.60 version (commit). Looks like you forgot to update js files. The ProcessRequest route is no longer used.

Thanks for your help - got it working now
Actually found one error - probably in your code as well
See https://github.com/nopSolutions/nopCommerce/issues/6599

currently experiencing the same issue and no error in the logs just console errors:

Uncaught TypeError: c.ListFiles is not a function
    at checkUploadResult (main.min.js:1:27701)
    at uploadFinished (main.min.js:1:27401)
    at uploadComplete (main.min.js:1:26568)
    at XMLHttpRequest.<anonymous> (main.min.js:1:28122)

are there any solutions I can follow to resolve this?

What version of nopCommerce ?
Have you incorporated the changes required from the Above commit ?