Robotic Task throwing ABORTED - NO DATA RECEIVED error even after all actions have been completed.

I have a robotic task which is connected to a process model, which worked well yesterday. But upon testing it again (without changing anything) and opening the executed robotic task in the Operational Console, I noticed that the variables of this RT is not visible after the run.

Also the said RT took lots of time to complete compared to when testing it directly at the RT. 

I have tried deleting bots and created new ones, plus I also tried it in different host machines but the result is still the same. 

Screenshots of my executions:

#1 - Testing directly from the Robotic Task (variables visible at the side, with values updating): 

#2 - Robotic task after Testing from Process Model (variables not visible at the side anymore) 

#3 - jidoka-client logs throwing ABORT EXECUTION SIGNAL RECEIVED FROM SERVER message