How to solve the problem that my Tencent Cloud php7.2.14 cannot find the startup file after using the pkill php-fpm command?

Question

My php7.2.14 was installed on Tencent Cloud using yum. The project needs to use the pkill php-fpm command. After that, php cannot be restarted. I am confused. I have not paid attention to this problem before. I fell into a trap. Help! Thanks!

I found that php7 is very different from php5 and php4 in the past. I fell into a trap if I wasn't careful. If you know it, please give me some advice. Thank you!