failed to make connection to backend: httpd-UDS

Hello When i try to modify account's website only not username from WHM i got this error in the old modified website when visit it i got 503 servives unavailable, i checked the apache logs and ifind this error [Tue Nov 27 14:12:11.821664 2018] [proxy:error] [pid 137348] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /opt/cpanel/ea-php56/root/usr/var/run/php-fpm/cb45e6cbd3978cba336b0a7fb32ae3be13b8db83.sock (*) failed
The only way i find to fix is to remove fpm packages ea-apache24-mod_proxy_fcgi and ea-php56-php-fpm then install it again this happen recently didn't happen before i was able to modify account's website without i had to reinstall fpm again. i believe a new update happen to cpanel made this prolem exist ,so what this probem about ?