andrej75

Hello Kasia,

Thank you for your reply. Since I posted my message I figured out what happened. The reason for sidebars not being displayed on right pages was that the content of sidebars got mixed-up.

For instance, if sidebar A had content 1 and sidebar B content 2, an event caused content 1 to appear in sidebar B and content 2 in sidebar A.

Before:
A1
B2

After:
A2
B1

So I corrected the contents of sidebars. While doing so I noted there was a pattern in which the mix-up took place and it had to do something with sorting sidebars in alphabetic order. I use 7 sidebars, when sorted alphabetically the pattern is:

Before:
A1
B2
C3
D4
E5
F6
G7

After
A5
B1
C2
D3
E4
F6
G7

Interestingly, the content of the last two sidebars remained unaffected by the error. Also, it seems that the mix-up was one time event as it didn’t reoccur since I corrected the content ALTHOUGH I’m still getting the same error message.

Path in the error message: /home2/admin/public_html/wp-includes/class-wp-hook.php

In sidebars I use Visual Editor widget by Black Studio TinyMCE Widget. I use this widget extensively and it works fine elsewhere. If I disable the widget there’s no content in sidebars and also no error messages.

The theme I use is MyKnowledgeBase

Best regards,
Andrej