Can't access WP-Admin page because of error

Question

I am trying to edit a website I made in Wordpress, but when I go to the example.com/wp-admin/ to get to the Admin,

I get the errors, and so there is no way to go into Wordpress to edit the site. I even changed the WP Theme back to the default TwentyTen through PHPMyAdmin, but that didn't help.

What can I do? Here is what I get when I try to go to wp-admin page:

Notice: register_uninstall_hook was called incorrectly. Only a static class method or function can be used in an uninstall hook. Please see Debugging in WordPress for more information. (This message was added in version 3.1.) in /home/content/80/13163980/html/ybk/wp-includes/functions.php on line 3547

Notice: Undefined index: page in /home/content/80/13163980/html/ybk/wp-content/themes/rt_infuse_wp/functions.php on line 45

Notice: Undefined index: page in /home/content/80/13163980/html/ybk/wp-content/themes/rt_infuse_wp/functions.php on line 55

Warning: Cannot modify header information - headers already sent by (output started at /home/content/80/13163980/html/ybk/wp-includes/functions.php:3547) in /home/content/80/13163980/html/ybk/wp-includes/pluggable.php on line 1178

Answer 1

Just find the pluggable.php and after <?php please add this ob_start(); and save. That should work.

Answer 2

Warning: Cannot modify header information - headers already sent by

Removing "blank lines" from function.php file and check it now issue is as it is than after check plugin folder >> disable plugin and check

Refresh your Browser, and the original error message Should go away.

Answer 3

I just set WP_DEBUG mode to false and that skipped it all and got me to the WP-Admin login page.