Critical Error, Each Day

Hello, My website is going through some critical errors each day once or twice.

I am getting this mail from WordPress.com

Hello!

Since WordPress 5.2 there is a built-in function that recognizes when a plugin or theme causes a fatal error on your website and notifies you with this automated e-mail.

In this case, WordPress caught a bug in your “Shopkeeper” theme.

First, visit your website ( https://ohbraceletberlin.com/ ) and check for any visible problems and check whether there are any visible problems.

Please contact your hosting company for assistance in further investigating this issue.

If your website appears to be buggy and you can no longer access your dashboard, as usual, WordPress now has a special “recovery mode”. This way you can securely log into your dashboard and conduct further research.

To protect your website, this link will expire in 1 day. But don’t worry: a new link will be sent to you by email if the error occurs again after the deadline.

When seeking help with this problem, you may be asked for some of the following information:
WordPress version 5.5
Current theme: Shopkeeper (Version 2.9.31)
Current plugin: (version)
PHP version 7.2.33

Bug details
==============
An error of the type E_ERROR was caused in line 32 of the file /srv/htdocs/wp-content/themes/shopkeeper/functions/plugins/germanized/functions.php. Error message: Uncaught Error: Call to undefined function wc_gzd_get_hook_priority () in /srv/htdocs/wp-content/themes/shopkeeper/functions/plugins/germanized/functions.php:32
Stack trace:
# 0 /srv/htdocs/wp-content/themes/shopkeeper/functions/plugins/germanized/functions.php(57): shopkeeper_germanized_compatibility ()
# 1 /srv/htdocs/wp-content/themes/shopkeeper/functions.php(37): include_once (‘/ srv / htdocs / wp -…’)
# 2 /wordpress/core/5.5/wp-settings.php(514): include (‘/ srv / htdocs / wp -…’)
# 3 /srv/htdocs/wp-config.php(71): require_once (‘/ wordpress / core …’)
# 4 /wordpress/core/5.5/wp-load.php(42): require_once (‘/ srv / htdocs / wp -…’)
# 5 /wordpress/core/5.5/wp-admin/admin.php(34): require_once (‘/ wordpress / core …’)
# 6 /wordpress/core/5.5/wp-admin/index.php(10): require_once (‘/ wordpress / core …’)
# 7 {main}
thrown

Kindly let me know if anyone can help me with this issue and problem.
My website is hosted on WordPress.

Looking forward to hearing from you people soon.

Thanks in advance

The page I need help with: [log in to see the link]