fix: frontend registration form is not showing

[sapayth]

Unregistered users visiting the page with shortcode: [wpuf-registration]

setting enabled to redirect to subscriptions before register. When an unregistered user clicks sign up on a pack, the page throws: There has been a critical error on this website.

[Rat01047]

Issue-1:
Frontend > Guest User > Visit Registration Page

Scenario:

1. Frontend > Visit registration page
2. Facing FATAL error

Debug log:

[16-Jan-2024 11:01:10 UTC] PHP Notice:  Undefined index: file in /Users/nurul.ratul/QA-Manual/SITES/WPUF_Rat/wp-content/plugins/query-monitor/collectors/php_errors.php on line 364
[16-Jan-2024 11:01:10 UTC] PHP Notice:  Undefined index: line in /Users/nurul.ratul/QA-Manual/SITES/WPUF_Rat/wp-content/plugins/query-monitor/collectors/php_errors.php on line 364
[16-Jan-2024 11:01:10 UTC] PHP Fatal error:  Uncaught Error: Call to a member function show_errors() on null in /Users/nurul.ratul/QA-Manual/SITES/WPUF_Rat/wp-content/plugins/wp-user-frontend/templates/registration-form.php:23
Stack trace:
#0 /Users/nurul.ratul/QA-Manual/SITES/WPUF_Rat/wp-content/plugins/wp-user-frontend/wpuf-functions.php(1618): include()
#1 /Users/nurul.ratul/QA-Manual/SITES/WPUF_Rat/wp-content/plugins/wp-user-frontend/includes/Frontend/Registration.php(149): wpuf_load_template('registration-fo...', Array)
#2 /Users/nurul.ratul/QA-Manual/SITES/WPUF_Rat/wp-includes/shortcodes.php(433): WeDevs\Wpuf\Frontend\Registration->registration_form(Array, '', 'wpuf-registrati...')
#3 [internal function]: do_shortcode_tag(Array)
#4 /Users/nurul.ratul/QA-Manual/SITES/WPUF_Rat/wp-includes/shortcodes.php(273): preg_replace_callback('/\\[(\\[?)(wpuf\\-...', 'do_shortcode_ta...', '\n[wpuf-registra...')
#5 /Users/nurul.ratul/QA-Manual/SITES/WPUF_Rat/wp-includes/class-wp-hook.php(324): do_shortcode('\n[wpuf-registra...')
#6 /Users/nurul.ratul/QA-Manual/S in /Users/nurul.ratul/QA-Manual/SITES/WPUF_Rat/wp-content/plugins/wp-user-frontend/templates/registration-form.php on line 23

[sapayth]

cannot reproduce

[anik-fahmid]

Could reproduce but now working (after PR).