Error Messages when updating pages

I’m having the same issue. “Warning: Cannot modify header information – headers already sent by…” In for an answer.

Try deactivating all the plugins and see if the error still occurs. If yes, try switching to default theme.

If that sorts it out, try reactivating plugins one by one, to see which one is to blame.

When I log in, I only see error messages. No dashboard or website. I’ve tried clearing my history. I’ve also tried logging in from the website under META, but there are only the error messages ??

Try this one, perhaps it will help. If you have FTP access, you can still deactivate all the plugins:

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

Kimberly, it doesn’t sound like the same error. Sorry.
Slobodan, I only had 2 plugs and only Wiziapp activated. I deactivated it, and then deleted it completely. The updating problem is still there. Oddly, it’s only one one page – the Home Page – and if I hit the Back button, the page is in fact updated properly. It seems these are warning messages only, not fatal ones. Meanwhile, I got an email from the Wiziapp support who got an automated error notification, asking for a printscreen of the errors, which I sent them. Yes I have FTP access, but I think I’ll wait until Wiziapp gets back to me. I suspect an error in the Wiziapp introduced corruption elsewhere, which I will not likely be able to fix, given my limited skills. Stay tuned, sports fans.

HisServant: I fixed the problem that same day.Sorry.

Update: I heard from Wiziapp support who said:

Our developers checked it, it seems the install is failing due to graphene theme which calls the wp_kses, and that’s what’s failing / conflicting.

Could you please make sure the version of graphene you are using is >=1.41 (graphene is up to 1.7.2 now).

From the graphene changelog:
Version 1.4.1
* Fixed a bug in the validator script where the second argument for wp_kses() was missing

Well, that’s fine, but I’ve been using 1.7.2 all along and I still have the problem. Anybody ?????

See this post from the Graphene Support Forum:

https://forum.khairul-syahir.com/bug-report/missing-argument-2-for-wp_kses#post-23243

Resolved in 2 hours!

Hurray, it’s fixed.

I followed the instructions in the above link, shaking like a leaf the whole time.

But it worked instantly. Thank you all for your help.

Cheers.