Locked out of backend after updating WP and Enfold, "Cannot modify header"

UPDATE: Forget this – i just recreated my website from when it WAS working. I’ll update WP and Enfold in 3-4 months when the bugs are ironed out.

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I just updated WP and Enfold two days ago to the new WP 5.5 i think and Enfold 4.7.6.1 i believe – now i can not log into the backend. The error is stated below although my domain name is exchanged for MYSITENAME. Please help me, my login details are in the private section of this post.

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Warning: setcookie() expects parameter 3 to be integer, array given in /var/www/MYSITENAME/public_html/wp-content/themes/enfold/includes/helper-privacy.php on line 303

Warning: Cannot modify header information – headers already sent by (output started at /var/www/MYSITENAME/public_html/wp-content/themes/enfold/includes/helper-privacy.php:303) in /var/www/MYSITENAME/public_html/wp-login.php on line 521

Warning: Cannot modify header information – headers already sent by (output started at /var/www/MYSITENAME/public_html/wp-content/themes/enfold/includes/helper-privacy.php:303) in /var/www/MYSITENAME/public_html/wp-login.php on line 537

Warning: Cannot modify header information – headers already sent by (output started at /var/www/MYSITENAME/public_html/wp-content/themes/enfold/includes/helper-privacy.php:303) in /var/www/MYSITENAME/public_html/wp-includes/functions.php on line 6270

Warning: Cannot modify header information – headers already sent by (output started at /var/www/MYSITENAME/public_html/wp-content/themes/enfold/includes/helper-privacy.php:303) in /var/www/MYSITENAME/public_html/wp-includes/pluggable.php on line 958

Warning: Cannot modify header information – headers already sent by (output started at /var/www/MYSITENAME/public_html/wp-content/themes/enfold/includes/helper-privacy.php:303) in /var/www/MYSITENAME/public_html/wp-includes/pluggable.php on line 959

Warning: Cannot modify header information – headers already sent by (output started at /var/www/MYSITENAME/public_html/wp-content/themes/enfold/includes/helper-privacy.php:303) in /var/www/MYSITENAME/public_html/wp-includes/pluggable.php on line 960

• This topic was modified 4 years, 2 months ago by migduvednok. Reason: Forget this - i just recreated my website from when it WAS working. I'll update WP and Enfold in 3-4 months when the bugs are ironed out