I can not access wp-admin

Looks like the theme itself is having an issue, if you rename the Theme via FTP and then access does it resolve?

Thank you. I do not understand the meaning of the warning but I do not see anything related to the theme (Divi) In any case it is not resolved by renaming the theme…

Try deactivating all of your plugins to explore whether any could be responsible. If none are, keep all plugins deactivated.

If you cannot get into the dashboard you can deactivate plugins via FTP. To deactivate all plugins, go to the /wp-content/plugins folder and rename plugins to plugins-old.

The last time I could access https://www.marketing-e-internet.com/wp-admin/ I deactivated all the plugins.

You said “Looks like the theme itself is having an issue” WHY?

Warning: Cannot modify header information – headers already sent by (output started at /home/marketi1/public_html/wp-config.php:100) in /home/marketi1/public_html/wp-includes/pluggable.php on line 1254

What does output started at /home/marketi1/public_html/wp-config.php:100 mean?

Thanke

When I was reading the code it looked like the theme was having an issue.

Follow the steps here :https://www.wpbeginner.com/wp-tutorials/how-to-fix-pluggable-php-file-errors-in-wordpress/

see if this fixes it.

Thank you … I found the cause of the issue: “Sometimes the headers already sent error is caused by an extra space after closing the php ?> tag, so you can just remove that, and it will fix the issue”.

Best regards… Ug…