Thanks Guys.
Now one alert is showing when I restarted php:
[25-Nov-2020 12:27:32] NOTICE: PHP message: PHP Warning: PHP Startup:
Unable to load dynamic library 'mbstring' (tried: /www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/mbstring (/www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/mbstring: cannot open shared object file: No such file or directory), /www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/mbstring.so (/www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/mbstring.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
[25-Nov-2020 12:27:32] NOTICE: PHP message: PHP Warning: PHP Startup: Unable to load dynamic library 'openssl' (tried: /www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/openssl (/www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/openssl: cannot open shared object file: No such file or directory), /www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/openssl.so (/www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/openssl.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
[25-Nov-2020 12:27:32] NOTICE: PHP message: PHP Warning: PHP Startup: Unable to load dynamic library 'soap' (tried: /www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/soap (/www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/soap: cannot open shared object file: No such file or directory), /www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/soap.so (/www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/soap.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
[25-Nov-2020 12:27:32] NOTICE: PHP message: PHP Warning: Module 'fileinfo' already loaded in Unknown on line 0
[25-Nov-2020 12:27:32] NOTICE: PHP message: PHP Warning: Module 'exif' already loaded in Unknown on line 0
[25-Nov-2020 12:27:32] NOTICE: PHP message: PHP Warning: Module 'imap' already loaded in Unknown on line 0
why I am seeing these warning? Is there any guidelines for these warning?