No request delivery notification has been received from LSAPI application, possible dead lock

Support and Discussion
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1

have a WordPress site working perfect before migrating to this server but now it started to give this error inside cyber panel error log for a website

No request delivery notification has been received from LSAPI application, possible dead lock.

have tried to search on google no solution was found why this issue is caused in only cyber panel

2

Welcome @sophiajhondeveloper Happy you are here

This error ocurs when there is lack of resources especially RAM. Run the following depending on your php version

# start here copy line bleow me
rm -f /var/lib/lsphp/session/lsphp71/* && rm -f /var/lib/lsphp/session/lsphp72/* && rm -f /var/lib/lsphp/session/lsphp73/* 
# then copy line below me
rm -f /var/lib/lsphp/session/lsphp74/* && rm -f /var/lib/lsphp/session/lsphp80/* && rm -f /var/lib/lsphp/session/lsphp81/*
3

which one should i run if i am running php version 8.0

4

where should I use these command ?

5

Run in ssh terminal. Copy paste as is then restart lsws like this

#ubuntu
systemctl restart lsws 
#almalinux
service lsws reload
6

I am using a 4 GB Memory / 2 AMD vCPUs / 80 GB Disk / NYC1 - CyberPanel 2.3.2 on Ubuntu 22.04, and I am facing a continuous error on the CyberPanel error log. The error message that I receive is - “2023-04-23 19:50:16.074381 [NOTICE] [454745] [xx.xx.xx.xxx:54820#example.com] No request delivery notification has been received from LSAPI application, possible dead lock.”

These methods only take 5 to 10 minutes to work. After some time the same error is showing up.

My CPU Usage - upto 15%
Ram - upto 23%
Disk Usage - upto 10%

If I increase resources, will the problem be solved?

7

I have tried this method but this does not solve and Cyber Panel does not take seriously, WordPress in not for Cyber Panel

8

The only thing that fixed this for me since openlitespeed v1.4 was to disable modsecurity totally and restart openlitespeed.

I have never went back to using modsecurity as I believe the issue is still not fixed.

9

I support that too I have asked a number of times and the request just gets blanked