- Compatibility IPS Version
- 4.6, 4.7
The following incompatibility occurred after moving from php 7.4.23 to 8.1.6 and upgrading Invision Community from 4.6.12.1 to 4.7.11, resulting in a 500 error in the admin center and in the public part of the site:

Solution:
/applications/advancedtagsprefixes/hooks/forumLastPostPrefix.php
Find in p.207:
/applications/advancedtagsprefixes/hooks/addPrefixToForm.php
Find in p.261:
Error when editing Musicbox app playlist on front (related to Advanced Tags & Prefixes app )
/applications/advancedtagsprefixes/hooks/addPrefixToForm.php
Find in page 434:
Do you feel limited by the tag system or prefixes?
This application enhances IPS 4's built-in tag and prefix system. It adds custom styling and fine-grained control over prefixes, plus new settings, enhancements, and helpful moderation tools. Prefixes are explicitly created through the Admin CP, and can be chosen from a separate prefix dropdown when creating a topic or other prefix-enabled content.
Some of its features:

Solution:
/applications/advancedtagsprefixes/hooks/forumLastPostPrefix.php
Find in p.207:
Replaced by:
/applications/advancedtagsprefixes/hooks/addPrefixToForm.php
Find in p.261:
Replaced by:
Error when editing Musicbox app playlist on front (related to Advanced Tags & Prefixes app )
/applications/advancedtagsprefixes/hooks/addPrefixToForm.php
Find in page 434:
Replaced by:
Do you feel limited by the tag system or prefixes?
This application enhances IPS 4's built-in tag and prefix system. It adds custom styling and fine-grained control over prefixes, plus new settings, enhancements, and helpful moderation tools. Prefixes are explicitly created through the Admin CP, and can be chosen from a separate prefix dropdown when creating a topic or other prefix-enabled content.
Some of its features:
- Define all prefixes manually through the Prefix Manager--even for open-tag systems.
- Show common tags and prefixes across your site with the Tag Cloud Widget.
- Add, fix, merge, and remove tags and prefixes in bulk through the Tag Manager.
- Choose a prefix when posting any prefix-enabled content, separate from tags.
- Control where and how tags and prefixes are displayed.
- Add custom HTML formatting to your prefixes, allowing colors, images, and much more.
- Limit prefixes by member group and location.
- Require a prefix in certain forums*.
- Add tags and prefixes to topics in bulk with Saved Actions or the Mass-Add tool.
- Apply a prefix to topics imported from RSS.
- Set a default prefix and tags for all new topics in a forum*.
- Override the global tag settings by forum*. This lets you enter custom tags in some forums and not others, or change how many tags are required, or have a prefix option without any tags at all.
- Display topic prefixes in the page title, last post info, and as filters under each forum's description, if you want.