queueprocd fails to start with "Unable to redirect stderr" error

Symptoms

queueprocd fails to start, and this error appears in the Startup Log output:

Startup Log
        ==> cPanel TaskQueue Processing Daemon version 1.0
        Unable to redirect stderr.

Description 

This can occur if the immutable bit is set on the /usr/local/cpanel/logs/queueprocd.log file. You can check if the bit is set with this command:

lsattr -i /usr/local/cpanel/logs/queueprocd.log

The output looks like this when the immutable bit is set:

----ia-------e- /usr/local/cpanel/logs/queueprocd.log

Workaround

Remove the immutable bit:

chattr -i /usr/local/cpanel/logs/queueprocd.log