[Resolved] Debugging (talked to you via Twitter earlier)

[Laura Brown]

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 /wp-includes/functions.php on line 3622

Warning: Cannot modify header information – headers already sent by (output started at
/wp-includes/functions.php:3622) in
/wp-includes/pluggable.php on line 1207

Warning: Cannot modify header information – headers already sent by (output started at
/wp-includes/functions.php:3622) in
/wp-includes/pluggable.php on line 1207

This also comes up from the admin side. I looked it up but I don’t want to mess with the functions file. I can’t even find the uninstall code it mentions.

[Tom]

These errors are usually a result of a poorly code/old plugin.

Do they persist even with no plugins activated?

[Laura Brown]

Yes! It was worse before I did some cleaning in the database and tables. But, I don’t know what I’m doing enough to go through bit by bit and it is an old site so there is a lot to go through. This is why I think I will just start a new db and move only the posts and my images over to it. I can get fresh files for core, plugins I use and GP.

Will that be all I need though? If I use the export with WP will that just give me my posts or will I risk having old plugin files stuck in with it?

Will be a big job to put it all together again I think. Demolition is always easier.

[Tom]

Those errors will typically not be caused by anything in the database.

This is a plugin error: Notice: register_uninstall_hook was called incorrectly. Only a static class method or function can be used in an uninstall hook.

For example: https://wordpress.org/support/topic/register_uninstall_hook-was-called-incorrectly

This is also a plugin error (because pluggable.php is involved): Warning: Cannot modify header information – headers already sent by...

These errors are caused by code running on your site – not the database.

Do you have caching? If so, deactivate all of your plugins and clear the cache.

I’m 90% certain that this is because of plugins.

Let me know 🙂

[bdbrown]

Hi Laura. Here are some links that discuss moving only specific data from one site to another.

[Laura Brown]

Thanks Tom and bdbrown (funny, my initials are ld brown). Will look at your suggestions Tom. Hope that works.

[Author]

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