My robot restart by itself

The exercise of CalculateClientSec of Academy, suddenly started to be restarting without arrive to Process. Reviewing I realized that on Transition of Get Transaction Data.xaml in Transitions (Destination) it appeared T1 and I do not know how to delete it. Please, could you help me if somebody know to tell me why could have appeared this?
in the condition of T1 I only put in_Transaction <> 0 in order to avoid the error but I think this is the problem, but I do not how de delete it.

I really appreciate your answers!!!.
Thank you very much.

I saw the problem!! It was since main.xaml I haven’t realized the arrow that point from getTransactionData.xaml to the same TransactionData. Thank you anyway