Fatal error: Uncaught Error

Hello there!

After updating my Wordpress version and his database in the bottom of my website appears:~

HTML Code:

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Fatal error: Uncaught Error: Call to undefined function get_option() in /membri/.dummy/apps/wordpress/wp-content/plugins/altervista/main.php:37 Stack trace: #0 /membri/.dummy/apps/wordpress/wp-content/plugins/altervista/early.php(104): include_once() #1 [internal function]: {closure}() #2 {main} thrown in /membri/.dummy/apps/wordpress/wp-content/plugins/altervista/main.php on line 37

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Can anyone help me please?

Website: santaclaraesports.altervista.org
Theme: One-Page WordPress Theme | PixieHype

Thank you for your attention!

Have you tried disabling all plugins? Probably a plugin conflicts with updates.

Bye!