Fatal error after activating pro version

We just activated a new license for a site we are taking over for a client and have moved to our server etc.,

When activating the pro version it has caused a fatal error on the public pages.

We followed all the usual troubleshooting including deactivating all other plugins, switching to default theme etc., and nothing had any effect.

Versions: 2.7.1 and 2.6.5

Debug output listed below:

Fatal error: Uncaught TypeError: Argument 3 passed to Elementor\Core\DynamicTags\Manager::get_tag_data_content() must be of the type array, null given in /home/*********/public_html/wp-content/plugins/elementor/core/dynamic-tags/manager.php:196 Stack trace: #0 [internal function]: Elementor\Core\DynamicTags\Manager->get_tag_data_content(‘5f75eda’, ‘site-url’, NULL) #1 /home/*********/public_html/wp-content/plugins/elementor/core/dynamic-tags/manager.php(100): call_user_func_array(Array, Array) #2 /home/*********/public_html/wp-content/plugins/elementor/core/dynamic-tags/manager.php(65): Elementor\Core\DynamicTags\Manager->parse_tag_text(‘[elementor-tag …’, Array, Array) #3 [internal function]: Elementor\Core\DynamicTags\Manager->Elementor\Core\DynamicTags\{closure}(Array) #4 /home/*********/public_html/wp-content/plugins/elementor/core/dynamic-tags/manager.php(66): preg_replace_callback(‘/\\[elementor-ta…’, Object(Closure), ‘[elementor-tag …’) #5 /home/*********/public_html/wp-content/plugins/elementor/includes in /home/sleepypoet/public_html/wp-content/plugins/elementor/core/dynamic-tags/manager.php on line 196

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