Critical: 'Path cannot be empty'

[RixzZ]

Fresh install with:

• Grav: v1.7.7
• Admin: v1.10.6

Going to Tools > Logs and selecting 'Email Log' on the first dropdown menu throws a 500 error.

In the 'Grav System Log' a 'critical' error shows up as 'Path cannot be empty' with the following verbose output:

 /var/www/html/system/src/Grav/Common/Helpers/LogViewer.php(57): fopen('', 'rb') 
 /var/www/html/system/src/Grav/Common/Helpers/LogViewer.php(36): Grav\Common\Helpers\LogViewer->tail(false, 20) 
 /var/www/html/vendor/twig/twig/src/Template.php(702): Grav\Common\Helpers\LogViewer->objectTail(false, 20, false) 
 /var/www/html/cache/twig/94/94b142c62db7e41d8b6f634ef8f90cce3bce97689e798c31d9c84cb6d9d6118b.php(54): Twig\Template->getAttribute(Object(Grav\Common\Helpers\LogViewer), 'objectTail', Array, 'method') 
 /var/www/html/vendor/twig/twig/src/Template.php(453): __TwigTemplate_aaf73f8a8f4bbad5ac0b80447e6a6dd88bce94b156e2ce84bd99ff37f32f35e5->doDisplay(Array, Array) 
 /var/www/html/vendor/twig/twig/src/Template.php(420): Twig\Template->displayWithErrorHandling(Array, Array) 
 /var/www/html/cache/twig/89/8908abb9fd86e218bef96a07a2085efb6f058b4bd3b7ab75f44133d3c3057942.php(166): Twig\Template->display(Array) 
 /var/www/html/vendor/twig/twig/src/Template.php(214): __TwigTemplate_9911a9be75d869c7c91dcb31c59b331e1be18d826531fd932963706b5a5d1116->block_content(Array, Array) 
 /var/www/html/cache/twig/e2/e2d8c56b2cabf6174f67c5b934befacc91956b0682a9a6625766d45b4ed68d77.php(317): Twig\Template->displayBlock('content', Array, Array) 
 /var/www/html/vendor/twig/twig/src/Template.php(214): __TwigTemplate_8da8783a11985568a56090ec88cc253b1c6df47687c434d66458f7838f80ab1d->block_content_wrapper(Array, Array) 

I can see that the HTTP request performed when using that option is '/admin/tools/logs?verbose=true&log=email.log'. I don't have an 'email.log' file on any path of my Grav installation so I guess that can be the problem.

There is a similar issue described on #3265, but what you have to do to reproduce it is way different, so I don't know if this have the same origin.

[mahagr]

This doesn't look like the same issue as in #3265 which was a bug in uploaded file handling.

Might be related to the missing log file, there's likely a missing check for file existance.

[RixzZ]

Great, thanks!

[rhukster]

released