please explain this error log

Question

i have domain in godaddy and i am trying to install a script in my dedicated server or trying to access my domain righttimematrimony.com it is not loading and showing errors.

Answer 1

I am using php7.3 and:

apt-get install php7.3-mbstring libapache2-mod-php7.3

solved the error:

Invalid command 'php_flag', perhaps misspelled or defined by a module not included in the server configuration