AdminCP only partially rendered by browser - cause?

[Hexsplosions]

I don't manage my own hosting, so don't claim to be anything of an expert, but before I raise a ticket for IPS I want to eliminate my hosting as the cause if I can do so.

Occasionally my AdminCP does not render correctly and I'm left with a partially loaded AdminCP. This is accompanied by the error 'ERR_CONTENT_LENGTH_MISMATCH'.

I use the Plesk control panel on my hosting so I do have the ability to tweak php.ini and to add additional NGINX directives, but that's about it. The only tweaks made are:

date.timezone = "Europe/London"
disable_functions = "exec, system, pcntl_exec, popen, proc_open, shell_exec"

Screenshot of the error:

Apache modules and PHP extensions:

Any ideas?

[Foolboy]

If you are using custom Admin Control Panel URL, make sure that you apply the appropriate access permission to Apache / Nginx server as well. Have you apply any web server-side filter rules on the custom ACP URL? (for example, password-protected folders)

[Hexsplosions]

10 minutes ago, Foolboy said:

If you are using custom Admin Control Panel URL, make sure that you apply the appropriate access permission to Apache / Nginx server as well.

Will check this, thanks.

10 minutes ago, Foolboy said:

Have you apply any web server-side filter rules on the custom ACP URL? (for example, password-protected folders)

Nope, none.

[Hexsplosions]

So as far as I can tell the permissions are correct, but that's only based on what I can see in the Plesk file manager.

I've raised a ticket with my host to see if they can pinpoint the cause.

[Foolboy]

You can try to see if there is any system error on IPS by visiting ACP > Systems > Supports > System Errors.

Also, if you currently running Apache, it is the best chance that any occurring error will be written in the web server's log. It could be in /var/www/vhosts/your_domain_name/statistics/logs/error_log, /var/log/httpd or just open it in Plesk's log manager. (I use pure Nginx on DirectAdmin so I cannot clearly described the location of the log file, my apologies about that.)

[Hexsplosions]

Thanks @Foolboy

My host made a small tweak and it seems to have resolved the issue for the moment, so I'm continuing to monitor.

Interestingly, though, I just got the very same error on IPS.

I'm going to reset Chrome to eliminate that as the cause.