meihuak Hi, I just tagged a new release 1.3.1 to fix the issue you reported. Thank you!
v1.3.1
Fix error when the tags changed message is deleted.
When you change the tags in a discussion, a new post is published.
If you try to delete it and you chose to remove money when a post is deleted, an error occurred.
It is now fixed.
🐛 Feel free to report any bug you find with this new release in this thread or open a GitHub issue !
Updating
composer update antoinefr/flarum-ext-money
php flarum cache:clear