Error with WPschema plugin

Hello,
We was really hoping you can help us. We have an issue with WPschema plugin on our website. I already talked to WPschema support and they are saying Zoho CRM Lead Magnet plugin causing this error.
Here are the error details:

Error Details ============= An error of type E_ERROR was caused in line 160 of the file /home4/allinjesus/metalprobuildings.com/wp-content/plugins/zoho-crm-forms/index.php. Error message: Uncaught Error: Call to a member function add_help_tab() on null in /home4/allinjesus/metalprobuildings.com/wp-content/plugins/zoho-crm-forms/index.php:160 Stack trace: #0 /home4/allinjesus/metalprobuildings.com/wp-includes/class-wp-hook.php(286): zcf_adminhelpenable(”) #1 /home4/allinjesus/metalprobuildings.com/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /home4/allinjesus/metalprobuildings.com/wp-includes/plugin.php(465): WP_Hook->do_action(Array) #3 /home4/allinjesus/metalprobuildings.com/wp-content/plugins/wp-schema-pro/classes/class-bsf-aiosrs-pro-schema-wizard.php(113): do_action(‘admin_head’) #4 /home4/allinjesus/metalprobuildings.com/wp-content/plugins/wp-schema-pro/classes/class-bsf-aiosrs-pro-schema-wizard.php(81): BSF_AIOSRS_Pro_Schema_Wizard->setup_wizard_header() #5 /home4/allinjesus/metalprobuildings.com/wp-includes/class-wp-hook.php(286): BSF_AIOSRS_Pro_Schema_Wizard->setup_wizard(”) #6 /home4/allinjesus/metalprobuildings.com/wp-includes/class-wp-hook.php(310): W

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