I had just completed a mission - Cavern Rescue I believe - It was a medium lvl mission for the sanctuary of sarila (Or how ever you spell it) and I went too complete it and got this error. I'm not sure if this will happen again as none of my other missions have finished. If this keeps happening I will be in trouble as this is my main source of income in the game.

Here's a screenshot:


You can clearly see in the background that this was, in fact, my pet and that I should not have received this message. This happened just a few minutes ago if you need too know. (Around 8:40 and it's 8:42 atm)

I just checked my trades (Too pick up the satchel from the mission I completed before it) and aw that I received what I would guess is the satchel for the mission that had the error show up.


Here's a screenshot:


So I just checked my mission log out of interest too see if it recorded the the mission and it has it in the log, still not sure why I had that error. I'm going the complete the other missions that just finished and see if the same thing happens.

The mission in question is the very top one.

Here's a screenshot:


I just finished the two other missions with no problems - Maybe that was just a fluke? Sorry for taking up your time if it was >.<

this happens to me as well but i don't see a problem to it since i still receive all my rewards. it usually happens when i complete a mission when the page is still loading

I believe this happens if you accidentally double click. The server tries to process the request twice (or, however many times you clicked).

The first one processes normally and you get your rewards. But each additional request fails because you've already completed it and this is the first error that just happens to trigger.