Joomla! Template AT Creart - Item Support

I change ($page = []) to ($page ) on /administrator/components/com_sppagebuilder/builder/classes/addon.php

and fixed my problem
Now I try to access to administrator and the page not work

/plugins/quickicon/akeebabackup/akeebabackup.php on line 240.

I installed the template. Uptate to acutal Joomla-Version (3.8.x) not possible? 3.6.5 is possible, but if I try to update to 3.8.x (via backend update check) it breaks an the backend is gone).

Also I have a problem with php. I run php 7.1 on the web server (7.2 is also possible).
I get the messages: Warning: A non-numeric value encountered in /www/htdocs/w01887f8/ on line 490

Installed with quick installation.

Need help, thanks
I wanted to update all extensions first and it turns out the Advanced Portfolio Pro Extensions is there in a newier version but it seems this is a paied software. Is it fact that i can now only ran the older version 3.8.2 instead of running the latest 4.1.0 ?

thx for answeres
Hey guys, is it ok if I always ask here for new versions of Advanced Portfolio Pro Extensions ? There is an update to 4.1.1 available.
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Item Name:
AT Creart
Item Version:
$29.00 $21.75
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This item may be used for a single domain only.
$39.00 $29.25
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