Error with headers

Hi there

Today I woke up, and updated several plugins and when I went to write my daily post, I see this error:

Warning: Cannot modify header information - headers already sent by (output started at /home/evitala/public_html/wp-content/themes/customizr/inc/parts/class-header-nav_walker.php:74) in /home/evitala/public_html/wp-content/plugins/wp-super-cache/wp-cache-phase2.php on line 89

I suposse that maybe was any of the polugins update, so I deactivate it, also WP Super Cache, but the error Was still there.

Any Idea to solve it??

My url is https://evitalacrisis.com/

Best Regards