Monitorix Did not show any statistic

After the update, reinstall the plug as described in the file, and after 48 hours shows no statistics.

After deactivation, and activation of a plugin earn me the following error.

An unexpected error occurred:

Plugin::Monitorix::buildGraphs: readline() on closed filehandle IN at /var/lib/monitorix/www/cgi/monitorix.cgi line 192. Use of uninitialized value $config_path in scalar chomp at /var/lib/monitorix/www/cgi/monitorix.cgi line 193. Use of uninitialized value $config_path in -f at /var/lib/monitorix/www/cgi/monitorix.cgi line 196. FATAL: File 'monitorix.conf.path' was not found! at /var/lib/monitorix/www/cgi/monitorix.cgi line 210.

I use the following Monitorix version 3.7.0 (12-Mar-2015)
OS:Ubuntu 14.04 Trusty
I-MSCP:1.2.3

@Piradoxlanieve The problem is not yet solved. The team did not make changes to the plugins still have the problem with the plugin;)