https://develop.backendless.com/Test/files/web

upload to "file browser " section take long time and then a network error panel in red box appears

Hello,

Could you please provide your Application ID, an error message that appears in the red box and steps to reproduce this error?

Regards,
Olha

upload done. but with all grant premission the index loaded but inner js and css not
https://backendlessappcontent.com/253B9A19-8FAC-E4B3-FF31-188A06680400/5A0A2A11-F10A-44ED-8A35-5AAC1B64EC42/files/web/js/chunk-09155df3.40e9e828.js

but in

can not load

Is your app hosted in the EU zone? If so, please try to replace api.backendless.com with eu-api.backendless.com in the URL.

Regards,
Olha