When I create a quest I can fill in all the boxes perfectly, no problem there. The only issues are when I made a quest I now get spammed with the letter 'a' in chat... Also there apparently is an internal error when I do ./questadmin reload. It's quite a vital command as you probably know. We on FlameSurvival RPG use quests a lot and consider it one of our main plugins, the reload issue only appears when we attempt to save a quest and reload them. Exiting the quest without saving has no error.
We currently use this version of Quests, and we're running 1.9 Minecraft.
With the reload issue we get an NPE in console logs.
Any advice would be appreciated,
-Rookie
@FlyingPikachu

One of your NPCs is invalid or there is an issue with Citizens. Make sure Citizens is setup properly and all of your NPC ids in quests.yml are correct.

Here is a thread with a similar error: https://www.spigotmc.org/threads/citizen-2-0-17-plugin-cant-work-on-1-9.132505/

The current suggestion seems to be updating Spigot, then Java. Since this problem is outside the scope of Quests, I must close this issue. If the problem persists after updating, please open a new ticket. Thanks!

Thanks, I removed a bunch of quests that could only be found in 'quests.yml' for some reason. The commands ./questadmin reload still won't execute correctly but I do have a hunch like yours that the problem is in the Citizens plugin. Line 34 onwards tells me that there is a problem but I'm not entirely sure what... Initialising the task maybe?

Thanks @FlyingPikachu, you've been a great help. :3