When trying to install templates from the web UI the tasks fail and now in the /templates/installs page of my web UI the templates show as pending and I am unable to install them.
Release OnApp 3.3.x
Web UI template manager
To resolve this issue the pending templates must be deleted from the templates table then they can be installed again from the web UI.
mysql> delete from templates where state='pending';
Query OK, 5 rows affected (0.04 sec)
WARNING - Do NOT perform such actions in the database without making a database dump. If you have support license it would be recommended currently to have Support check into such issue for you.