Web loads just sometimes. (1 reply)

I run a wamp server where I have several sites I'm working on to make new sites. Most of them is running Wordpress with the theme Avada. One site I'm supposed to work on is not loading, and I cant find any information of why its not working. I have other webs that works just fine so the problem is somhow related to the web. Yesterday it all of a sudden just worked, a little. Tried to run a backup but it ended in same message as ever, "the web is not available"(translated from norwegian).

I have tried to run readme.html and that file runs just fine.
I have enabled define('WP_DEBUG', true); But get no errormessages. Many years ago when I was writing asp code I always had an errormessage I could use to debug.

Below is apache_error.log. I have trouble understanding how to figure out how to read that.

Would love if anyone could help me on the way.

[Thu May 23 16:17:51.518331 2019] [mpm_winnt:notice] [pid 11892:tid 752] AH00428: Parent: child process 11884 exited with status 3221225725 -- Restarting.
AH00112: Warning: DocumentRoot [D:/wamp64/bin/apache/apache2.4.37/dr] does not exist
[Thu May 23 16:17:51.664329 2019] [mpm_winnt:notice] [pid 11892:tid 752] AH00455: Apache/2.4.37 (Win64) PHP/7.2.12 configured -- resuming normal operations
[Thu May 23 16:17:51.664329 2019] [mpm_winnt:notice] [pid 11892:tid 752] AH00456: Apache Lounge VC15 Server built: Nov 21 2018 11:51:35
[Thu May 23 16:17:51.664329 2019] [core:notice] [pid 11892:tid 752] AH00094: Command line: 'd:\\wamp64\\bin\\apache\\apache2.4.37\\bin\\httpd.exe -d D:/wamp64/bin/apache/apache2.4.37'
[Thu May 23 16:17:51.689329 2019] [mpm_winnt:notice] [pid 11892:tid 752] AH00418: Parent: Created child process 13784
AH00112: Warning: DocumentRoot [D:/wamp64/bin/apache/apache2.4.37/dr] does not exist
AH00112: Warning: DocumentRoot [D:/wamp64/bin/apache/apache2.4.37/dr] does not exist
[Thu May 23 16:17:52.372321 2019] [mpm_winnt:notice] [pid 13784:tid 708] AH00354: Child: Starting 64 worker threads.