The following packages have unmet dependencies
The following packages have unmet dependencies:
php7.2-mbstring : Depends: php7.2-common (= 7.2.24-0ubuntu0.18.04.6) but 7.2.31-1+ubuntu18.04.1+deb.sury.org+1 is to be installed
E: Unable to correct problems, you have held broken packages.
I have been trying to get mbstring installed with no luck. Please anyone know how I can go about fixing this?