Avia Page Builder not work!

Hello good work
I have been using your theme on our site since 2014. My licence and site information at below.

Licensee:
CÜNEYT ASLAN
Purchase Date:
2014-07-23 08:38:42 UTC

I want to talk about our problem. Sometimes “Avia Page Builder” does not load as you can see below.

https://ibb.co/Tb6LcNP

Ee had faced the same problem before and reinstalled it by transferring all the contents as XML to solve the issur. At first “Avia Page Builder” did not work again. We saw that it got better by itself. Now we are faced with the same problem.

We talked to our hosting company. They said that system has high level features and there might be a problem with the software. And they said we can get support from you.

I asked them to send their bug reports and features of the hosting we have. They sent to me this.

https://www.nadirmetal.com.tr/phpinfo.php

[Wed Aug 12 10:40:52.819185 2020] [autoindex:error] [pid 2381608]
[client 66.249.64.180:41687] AH01276: Cannot serve directory
/home/nadirmet/public_html/wp-content/themes/enfold/framework/: No
matching DirectoryIndex
(index.php,index.php5,index.php4,index.php3,index.perl,index.pl,index.plx,index.ppl,index.cgi,index.jsp,index.jp,index.phtml,index.shtml,index.xhtml,index.html,index.htm,index.wml,Default.html,Default.htm,default.html,default.htm,home.html,home.htm,index.js)
found, and server-generated directory index forbidden by Options
directive

Have you ever experienced such a problem before and how did you solve the problem? We are waiting your help ASAP…

Best regards,