PHP error

Warning: Cannot modify header information – headers already sent by

Give this a read, it may help you sort it out.

https://codex.www.ads-software.com/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F

Hi Jan,

Thank you. I tried everything, but with no luck. I did some info where it could be related to a db cache issue. I just happen to have WP Super Cache installed.

Thanks,
Jim

Normally I’d say deactivate all of your plugins but with WP Super Cache give this a read first for gotchas regarding deactivating that plugin.

https://www.ads-software.com/extend/plugins/wp-super-cache/other_notes/

Once you’ve read and understood those steps, give this a read for disabling your plugins when you don’t have admin access.

And as usual, consider backing up the whole works first. ??

https://codex.www.ads-software.com/WordPress_Backups
https://codex.www.ads-software.com/Backing_Up_Your_Database
https://codex.www.ads-software.com/Restoring_Your_Database_From_Backup

With the plugins turned off, see if you can get into the admin pages.