Hello,
I want to resize my dashlets for suitecrm, but when i click on edit(the pen of dashlets) an error occured :
I tried to install suitecrm 7.5, 7.5.1 and 7.5.3 and of them gives the same error 
Any idea ?!
Sorry that mine is a generic answer, but since nobody is answering you anyway…
Try a “Quick repair and rebuild”.
Try removing the dashlet, log off, log in, recreate it.
Check log files for errors.
I actually did it, quick repair and rebuild, clean cache, … But the problem stills the same.