By error I placed a Google analytics tag onto the theme of the website.
I now can not log into wp-login and am getting this error:
Warning: Cannot modify header information - headers already sent by (output started at /home/thi19017/public_html/wp-content/themes/html5blank-master/functions.php:1) in /home/thi19017/public_html/wp-login.php on line 418
Warning: Cannot modify header information - headers already sent by (output started at /home/thi19017/public_html/wp-content/themes/html5blank-master/functions.php:1) in /home/thi19017/public_html/wp-login.php on line 431
There is also not a FTP set up for this site. How can I fix this urgantly?