Fatal Error: Uncaught TypeError: Argument 3 passed to

Hello everyone.

Since a couple of weeks, I am having some issues in accessing some of the blog posts on my website (www.duegradi.eu). When I try to open an older blog post (all posts available here https://www.duegradi.eu/articoli/), I get the following:

Fatal error: Uncaught TypeError: Argument 3 passed to locate_block_template() must be of the type array, string given, called in /home/customer/www/duegradi.eu/public_html/wp-includes/template.php on line 66 and defined in /home/customer/www/duegradi.eu/public_html/wp-includes/block-template.php:22 Stack trace: #0 /home/customer/www/duegradi.eu/public_html/wp-includes/template.php(66): locate_block_template('', 'page', 'default') #1 /home/customer/www/duegradi.eu/public_html/wp-content/plugins/wpdm-page-template/wpdm-page-template.php(68): get_query_template('page', 'default') #2 /home/customer/www/duegradi.eu/public_html/wp-includes/class-wp-hook.php(303): wpdm_page_template->wpdm_page_template_template_include('/home/customer/...') #3 /home/customer/www/duegradi.eu/public_html/wp-includes/plugin.php(189): WP_Hook->apply_filters('/home/customer/...', Array) #4 /home/customer/www/duegradi.eu/public_html/wp-includes/template-loader.php(104): apply_filters('template_includ...', '/home/customer/...') #5 /home/customer/www/du in /home/customer/www/duegradi.eu/public_html/wp-includes/block-template.php on line 22

What type of issue am I facing and how could I solve it? Why does this happen with only older blog posts (e.g. older than 5 months)?

Many thanks in advance for any help, tip or suggestion.

Chiara

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