Recently I have found that all quote links (on an arrow in the quote block) return not found, because they have content_class=undefined instead of content_class=forums_Topic:

?app=core&module=system&controller=content&do=find&content_class=undefined&content_id=2478&content_commentid=1100519

instead of this:

https://www.nashtransport.ru/?app=core&module=system&controller=content&do=find&content_class=forums_Topic&content_id=2478&content_commentid=1100519

Are there any ideas why this is happened? 

Do you have an example item you can link me to, so I can take a look for you?

21 minutes ago, Marc Stridgen said:

Do you have an example item you can link me to, so I can take a look for you?

This for example. And actually this happens to all quotes in forum (not in blogs for example).

Works just fine for me as guest.

I have clicked on the link (and also the + button for testing) which resulted in:

 

Are you using a custom theme? If yes, does this also happen with the unmodified IPS theme?

12 minutes ago, Daniel F said:

Works just fine for me as guest.

I have clicked on the link (and also the + button for testing) which resulted in

 

2 hours ago, KVentz said:

Recently I have found that all quote links (on an arrow in the quote block) return not found

 

4 minutes ago, Daniel F said:

Works just fine for me as guest.

I have clicked on the link (and also the + button for testing) which resulted in:

I mean this link:

This little arrow has link (goes to 404):

https://www.nashtransport.ru/?app=core&module=system&controller=content&do=find&content_class=undefined&content_id=58241&content_commentid=1100709

But it should have link:

https://www.nashtransport.ru/?app=core&module=system&controller=content&do=find&content_class=forums_Topic&content_id=58241&content_commentid=1100709

It has "content_class=undefined" instead of "content_class=forums_Topic".

34 minutes ago, Daniel F said:

Are you using a custom theme? If yes, does this also happen with the unmodified IPS theme?

Nothing special to the forum app I think:

53 minutes ago, KVentz said:

Nothing special to the forum app I think:

You would need to check on a default unlatered theme in order to test this. Some of the items there can affect any area of the site

On 11/24/2021 at 1:33 PM, Marc Stridgen said:

You would need to check on a default unlatered theme in order to test this. Some of the items there can affect any area of the site

Same with unaltered theme.

I found that <blockquote> tag does not have 'data-ipsquote-contentclass="forums_Topic"' attribute at all when clicking on 'Quote' link or using 'Quote selection' button:

<blockquote class="ipsQuote" data-gramm="false" data-ipsquote="" data-ipsquote-contentapp="forums" data-ipsquote-contentcommentid="1102269" data-ipsquote-contentid="51668" data-ipsquote-contenttype="forums" data-ipsquote-timestamp="1638423997" data-ipsquote-userid="882" data-ipsquote-username="KVentz">

Should be:

<blockquote class="ipsQuote" data-gramm="false" data-ipsquote="" data-ipsquote-contentapp="forums" data-ipsquote-contentcommentid="1102269" data-ipsquote-contentid="51668" data-ipsquote-contenttype="forums" data-ipsquote-contentclass="forums_Topic" data-ipsquote-timestamp="1638423997" data-ipsquote-userid="882" data-ipsquote-username="KVentz">

 

The problem was with '(WK) Warn in post' plugin. Thank you, you are very helpful. :)))