I am not able to edit the page from the browser. I used to change and edit webparts when suddenly in the edit mode everything looks like it is locked/stalled. When I open the debugger tool, I saw a JavaScript error that is not shown in other pages in edit mode:
sp.ui.rte.js?rev=rOOAA8PEAq0mDdsIJm30zA%3D%3D:2
The page toolbar looks like this and it is not clickable:
When i Try to edit a webpart nothing happens:
I am not sure how this error is happening and why, can someone help?