缺少 /var/run/php-fpm/php7.4-fpm.sock 或 /var/run/php-fpm/

Question

Using: Ubuntu 20.04
PHP starts failed because missing /var/run/php-fpm/php7.4-fpm.sock & /var/run/php-fpm/php7.4-fpm.pid .
Heres the details: (feedback from systemctl status php7.4-fpm.service )

● php-fpm7.4[3465899]:ERROR: unable to bind listening socket for address '/var/run/php-fpm/php7.5-fpm.sock': No such file or directory (2)

● php-fpm7.4[3465899]:ERROR: unable to bind listening socket for address '/run/php-fpm/php7.5-fpm.pid': No such file or directory (2)

I checked "/etc/php/7.4/fpm/pool.d/www.conf", but there is the following code in the file:

;listen = 127.0.0.1:9000
listen = /var/run/php-fpm/php7.4-fpm.sock

Answer 1

Type in:

cd /run
sudo mkdir php 
sudo mkdir php7.4-fpm
cd /etc/php/7.4/fpm/pool.d/
cp www.conf www.conf.backup
vi www.conf

Find following code:
line 36:

listen = /run/php/php7.4-fpm.sock

change it to:

listen = 127.0.0.1:9000

line 133:

listen = /var/run/php-fpm/php7.4-fpm.sock

Remove that line, save that file, and type in:

sudo service php7.4-fpm stop
sudo service php7.4-fpm start

Thanks: @tkausl @dai007uk