Load module timeout causing UI freeze on navigation dropdowns

i have this error :

We can find somthing like in this ticket https://forum.xwiki.org/t/load-module-timeout-causing-ui-freeze-on-all-dropdowns/3156

I removed the cache but nothing happened. Tested with many machines and broswers but all give same error.
keypress.js and require-config.js are downlaoded very fast in the browser without any problem.
I am using [XWiki 10.11.3]

I would check the status of the HTTP requests that correspond to these 2 resources, using the Network tab. See the actual URLs that were used and check the response (is it JavaScript or something else).