I was not able to install the one before this when I tried earlier, so I backed up and updated the plugins as you suggested and then when I went back to the control panel it showed the update of CB, I might be wrong and it might have been the last one, but anyhow I could not and the sight got stuck and went down and I could not undo it. When I go in now I can see this, but I won't try to update again:
Community Builder version 2.4.5+build.2020.05.07.21.35.06.e8f8a6125 is available: Learn More
Earlier also it said that there was a fault on I think line 22 at PHP and this:
pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,
Regards, Sherab