Nginx error when click start

[vincentteo]

Deployed on Debian 10.7 . Debian VM was built successful and follow the step by step of the installation . Until the start up nginx step was failed with the error nginx: [error] invalid PID number "" in "/opt/waf/nginx/var/run/nginx.pid"

[ch-rigu]

could you check if that file contains the pid ?
if not you could add any random number there and start it

another thing you could try is:
start nginx manually by executing: /opt/waf/nginx/sbin/nginx
stop nginx by executing: /opt/waf/nginx/sbin/nginx -s stop

then should be work

I will add check if pid is empty.