Error when logging in and out

Hello everyone,
I have installed the Enfod and Enfold Child themes on this domain link below:
Import: Medical Demo
When logging in and out, I receive the following error message:

What can I do here?
Thank you in advance.

Warning: Undefined array key “path” in /home/httpd/vhosts/anlaesse.li/httpdocs/wp-includes/l10n.php on line 1192 Warning: Undefined array key “path” in /home/httpd/vhosts/anlaesse.li/httpdocs/wp-includes/l10n.php on line 1218 Warning: Undefined array key “path” in /home/httpd/vhosts/anlaesse.li/httpdocs/wp-includes/l10n.php on line 1236 Warning: Undefined array key “path” in /home/httpd/vhosts/anlaesse.li/httpdocs/wp-includes/l10n.php on line 1192 Warning: Undefined array key “path” in /home/httpd/vhosts/anlaesse.li/httpdocs/wp-includes/l10n.php on line 1218 Warning: Undefined array key “path” in /home/httpd/vhosts/anlaesse.li/httpdocs/wp-includes/l10n.php on line 1236 Warning: Undefined array key “path” in /home/httpd/vhosts/anlaesse.li/httpdocs/wp-includes/l10n.php on line 1192 Warning: Undefined array key “path” in /home/httpd/vhosts/anlaesse.li/httpdocs/wp-includes/l10n.php on line 1218 Warning: Undefined array key “path” in /home/httpd/vhosts/anlaesse.li/httpdocs/wp-includes/l10n.php on line 1236