I send two same fleet in to attack and after realizing my mistake i try to call off one of them and nothing happens *(script unresponsive) then after a couple of times trying black screen appear and this message was there> https://prnt.sc/jy9vy5

Then all return to normal and that doubled fleet was gone?! 

Having the same problem. Says that the return is complete, but the ships won’t clear the queue and resources not tallied...

Yeah, sometimes they run into a bug of some sort and the fleets get "stuck" at 100% returned, but don't register as complete.  So, just hang in there a little while (sometimes a few minutes, sometimes a few hours, unfortunately) and the fleets will eventually clear.

all flights stuck at home complete... very frustrating .... its been a while since this has happen  but always seams to happen at the worst times

yep, 3 returned ships stuck at 00s return

same here, including transports from / to a bestiary.

me toooooooo

nekem is beragadtak

De akkor nem ragadtam meg, de most én vagyok!
No, I was not stuck then... but now I am stuck with some small fleet... Lost in space

Then, after the message, all return to normal and that doubled fleet was gone...

This, what you described Now, is another bug!

I got 3 spies got stuck at someone's orbit's planet, 3 debris collectors slot got stucks on the way back, 4 pirate killers got stuck at my planet orbit, and 1 lurker was flying above an new planet with colonization mission on. 

Hey, this time it's only been 2 hrs so far....

HEY ADMIN, how about fixing this problem for real?

I must point out that this is a different bug from Lost in space
Aldo to players files the same... 
 
I don't want to show of and/or to say that I know something about coding but... 

This one is due to nginx and you can't do much about it...
Nginx overcomes C10K problem but it has asynchronous approach and it suppose to be event-driven... but it is NOT always like that...
Someone who is familiar with nginx will know what I am talking about...
For some reason event is repeated and he try to execute it again and then trows out an error that he cannot do it again...
This happens because he is not syncing events *(it is not linear action)...
In this case he get request to terminate some action and when he get that request again he trows out an error that action (he suppose to terminate) dose not exist (because is terminated by previous request) and solution is simple check out before execute...
 
And to address the problem others reported that is related to Lost in space bug...
I have documented with pictures what actually happens, and to me looks like that all timers reset for some reason or the event time end is in the past IDK for sure...
I can't suggest solution for this one because I did not read code for that and I don't know where to start if I read it anyways... 
So coders will know how to address this issue if it is not the servers time settings... and if I am right then recoding countdown not to depend on server time || or to be a simple count down || or sync with NTP on restart to ensure time related issue bugs to clear out... 

And please ADMIN sort this posts in related bugs... 
 

The problem is not actual.