Critical Error when trying to edit Homepage

Hi guys, long time no speak.

I have a clients website acting strangely. Every page can be edited apart from the home page.
Clicking edit brings up the “critical error” message.
I have deactivated all plugins and tried editing, same issue.

This happened a few months back, I rebuilt the homepage again using a fresh page and saved templates, this solved the issue for a while.
Its now returned and Im stumped as to why its only effecting the home page.

All plugins currently activated. These can be deactivated if needs be.
PHP is 7.3 (Highest version hosing can provide currently)
Enfold ver 4.8.7.1

This is the error message generated by WordPress

If your site appears broken and you can’t access your dashboard normally, WordPress now has a special “recovery mode”. This lets you safely login to your dashboard and investigate further.
(private content)

To keep your site safe, this link will expire in 1 day. Don’t worry about that, though: a new link will be emailed to you if the error occurs again after it expires.

When seeking help with this issue, you may be asked for some of the following information:
WordPress version 5.8.2
Current theme: Dreamtex Ltd (version 1.0)
Current plugin: (version )
PHP version 7.3.31

Error Details
=============
An error of type E_ERROR was caused in line 3751 of the file /home/cluster-sites/2/d/dreamtexltd.com/public_html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/class-element-templates.php. Error message: Uncaught TypeError: Argument 1 passed to aviaElementTemplates::set_locked_attributes() must be of the type array, string given, called in /home/cluster-sites/2/d/dreamtexltd.com/public_html/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/slideshow_fullscreen/slideshow_fullscreen.php on line 988 and defined in /home/cluster-sites/2/d/dreamtexltd.com/public_html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/class-element-templates.php:3751
Stack trace:
#0 /home/cluster-sites/2/d/dreamtexltd.com/public_html/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/slideshow_fullscreen/slideshow_fullscreen.php(988): aviaElementTemplates->set_locked_attributes(”, Object(avia_sc_slider_fullscreen), ‘av_fullscreen_s…’, Array, Array, ”)
#1 /home/cluster-sites/2/d/dreamtexltd.com/public_html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/class-shortcode-template.php(1123): avia_sc_slider_fullscreen->shortcode_handler(Array, ‘\n[av_f

Hoping someone can shed some light. Temp login provided.

Thanks

• This topic was modified 3 years ago by bluebubble. Reason: adding info