Question Emoticons in posts are not displayed

In the backup of my Lifesite with K6.1.4 the emoticons are not displayed in the posts with K6.1.4 and with k6.2.0-RC1, instead it says [img without closing brackets.
If I edit the post, delete the [img and insert the same smilie again, it is also permanently displayed.
In the Lifesite php 8.1.23 is installed and in the LAMP server php 8.2.11 is installed.
Can it be due to php?

Gindi

This has nothing to do with the PHP version. They are only image links to the smilies. Maybe something went wrong during the backup. Create a new backup of the live page and test it again.

I have created a new test version with a current backup. The problem is the same.
What I do not understand is that in posts older than 1 year, the smilies are displayed and in posts newer date in the same topic not.
I then exported the database in the Strato customer center with phpmyadmin and deleted the table xxxx_kunena_smilies in the test server and imported it from the Strato database. With Filezilla I downloaded the directory "/emoticons" from /media/kunena and inserted it in the test server.
Nothing has changed, the smilies are still not displayed.

Gindi

I wonder if that problem occurs
Are there also gif or SVG files in the emoticons folder?
I have a site where that problem also occurs
but there are also empty boxes when I want to choose smiley in the editor

What is displayed when you edit a post and then go to Show source code in the editor? Is only one [img] tag displayed without any further address?

no, he refers to a gif image