Hi @Sathams_Tech_TV,
if you have just recently performed a fresh install on this server, it might be this issue: Update error: Cannot babelify - Unknown plugin "transform-object-rest-spread"
Check whether bench build works properly (and as mentioned before, check your browser console, also available on F12 in Firefox/Chrome). If it contains “… is not a function”, it might be the above. If it is, install dependecies as described, then run bench build and bench restart. Hope this helps.