Can't add users to group with moon theme installed

[DeCodie]

Actual behaviour
Upon trying to add members to a group, the users do not get added as expected. There is no visible field to select or add group members.

Expected behaviour
When attempting to add members to a group within the Kanban Board, the selected users should be added to the group successfully. Their profiles or avatars should be displayed as part of the group, confirming their inclusion.

Screenshot

Actual behaviour
Upon trying to add members to a group, the users do not get added as expected. There is no visible field to select or add group members.

Expected behaviour
When attempting to add members to a group within the Kanban Board, the selected users should be added to the group successfully. Their profiles or avatars should be displayed as part of the group, confirming their inclusion.

Screenshots

Configuration
Kanboard version: 1.2.32
Database type and version: MariaDB
PHP version: 8.1.18
OS: Linux
Browser: Chrome Version 114.0.5735.199

The issue is resolved by uninstall the plugin. A fix may be needed in the next update. @tboerger @TheMightyOnyx @Haocen @kenlog