I tried disabling all modifications and the update still fails. When I check the error log it is blank.

Please post your system info: https://arastta.org/docs/user-manual/tools/system-information

Also try setting your site offline manually, then disable all modification and run refresh, plus cleaning the site cache in settings. Then try the upgrade again, and if still any error, post the exact message / image of it.

The update still failed after trying your suggestions. I put the site in maintenance mode. Is that what you mean by setting the site off manually?

I disabled all modification, ran refresh and cleaned the site cache in settings. I've shown a list of modifications I have in the attachments. The ones enabled are the only ones I normally enable. I disabled each of these when I tried the upgrade.

Weird. But I don't see what the max values are, maybe I overlooked it, but what are the values for t.ex.:

• max_input_vars
  
• memory_limit
  
• max_execution_time
  
• upload_max_filesize
  
• mysql.connect_timeout
  

Try adding the attached file to your store root, and rename it .user.ini to see if it helps.

Weird. But I don't see what the max values are, maybe I overlooked it, but what are the values for t.ex.:

• max_input_vars
  
• memory_limit
  
• max_execution_time
  
• upload_max_filesize
  
• mysql.connect_timeout
  

Try adding the attached file to your store root, and rename it .user.ini to see if it helps.

Weird. But I don't see what the max values are, maybe I overlooked it, but what are the values for t.ex.:

• max_input_vars
  
• memory_limit
  
• max_execution_time
  
• upload_max_filesize
  
• mysql.connect_timeout
  

Try adding the attached file to your store root (unzip first), and rename it .user.ini to see if it helps.

I can't download the attachment. It takes me to this page but download never starts. Can you send another way?

Create a .user.ini in stores root, with t.ex. this content:

magic_quotes_gpc = Off;

register_globals = Off;

default_charset	= UTF-8;

max_input_vars = 20000;

memory_limit = 300M;

max_execution_time = 36000;

upload_max_filesize = 999M;

safe_mode = Off;

mysql.connect_timeout = 90;

session.use_only_cookies = On;

session.use_trans_sid = Off;

session.cookie_httponly = On;

session.gc_maxlifetime = 3600;

allow_url_fopen = on;

Still failed to update

So what does those values show in your system now, after adding the file, did they change?

I don't think the values changed but I'm not sure where to look

Ensure the file is named .user.ini (starting with a dot), add also this to it:

post_max_size = 999M;

Check if this value changed after, in the left column. If not, ask you host to increase the values.
Arastta zip is at the moment 19.6MB

Well, I don't think I uploaded the file correctly. I corrected it and the update still failed however I did get information in the error log. If I clear the log and try the update again the error log is empty.

You didn't change the post_max_size ....

I added the additional line you requested. This time I can download the error log. I've attached below. I cleared the error log and tried running the update again. I've attached that file as well. It was a much shorter list.

I added the additional line you requested. This time I can download the error log. I've attached below. I cleared the error log and tried running the update again. I've attached that file as well. It was a much shorter list.

Yes, the values are changing. max size is now 999M

If I log out of administrator and then back in again I can duplicate the smaller error log. If I clear it and then try updating again the error log is empty.

The "errors" in log is just notifications, not show stoppers, and they are not related to the update ...

Is Suhosin and/or ModSecurity active on the server? They often have own limits, overriding those in php.ini, which only server admin normally can change.

Maybe you could add a file in the root displaying the full php info? Just give the file a random name ending in .php and PM the link to me, easier to get the full picture then.
Add into the file:

<?php

phpinfo();

Here's the php info. Hopefully that will give you the info you need.