Download failed.: fopen(/tmp/wordpress-6.3.1-no-content-MqdURL.tmp)

Hi there,I'm experience some issues with MyTicket temple. When I try to update it I receive: Download failed.: fopen(/tmp/wordpress-6.3.1-no-content-MqdURL.tmp): failed to open stream: No such file or directoryAnd whenever i Edit Home3 Page and I click Update it automatically redirects me to All Posts, which is really weird. I deactivate all plugins and activate them again and still same problem...Also I received this email from WordPress when all this started:WordPress has a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email. In this case, WordPress caught an error with your theme, MyTicket. First, visit your website (https://mywebsite .com/) and check for any visible issues. Next, visit the page where the error was caught (https://mywebsite .com/wp-admin/post.php?post=2962&action=edit) and check for any visible issues.Error Details ============= An error of type E_ERROR was caused in line 430 of the file /home/evente13/public_html/wp-content/themes/myticket/inc/template-tags.php. Error message: Uncaught Error: Call to undefined function wc_get_product() in /home/evente13/public_html/wp-content/themes/myticket/inc/template-tags.php:430 Stack trace: #0 /home/evente13/public_html/wp-content/themes/myticket/inc/shortcodes/widgets/myticket-events-schedule-minified.php(177): myticket_buy_btn(2505, 'class="get-tick...', Array) #1 /home/evente13/public_html/wp-content/plugins/so-widgets-bundle/base/siteorigin-widget.class.php(227): include('/home/evente13/...') #2 /home/evente13/public_html/wp-content/plugins/siteorigin-panels/inc/renderer.php(791): SiteOrigin_Widget->widget(Array, Array) #3 /home/evente13/public_html/wp-content/plugins/siteorigin-panels/inc/renderer.php(1143): SiteOrigin_Panels_Renderer->the_widget(Array, Array, 0, 0, 1, false, false, 2962, '') #4 /home/evente13/public_html/wp-content/plugins/siteorigin-panels/inc/renderer.php(1110): SiteOrigin_Panels_Renderer->render_widget(2962, 0, 0, 1, Array, false) #5 /home/evente13/public_html/wp-content/plugins/siteorigin-panels/inc/renderer.php(102Thanks.