It is not so much here to describe the problem…
I just have installed Grav 1.7.6.
I know my permissions are badly set (777) but I guess that is not the problem.
File path bellow:
Just after installation I went into the installation directory and wrote
It showed me this:
In ArrayLoader.php line 44:
Error URL (Can not place it here - too many characters for upload)
I do not really know what is happening and did not find any same or similar problem.