Protools crashed while recording live show

[samari]

Hi there
I am using protools for recording for a long time, and I want to say that every time I am hopping that every thing will go well and I won't have any problems.
for most of the rezones it is not in my hands.
sometimes its just stop for buffer size even if the buffer its on his limit and I continue recording and it work fine and I didn't change a thing.
But 3 days ago I record and after 4 min the meters frizzed and I couldn't escape the program until I force quit the program and when I finally restart there program I record only the last 2 songs. the band was really disappointing from that and so as I. it ruins my name and I know that I did the same as always but sometimes it work fine and sometime something happen.
I have a strong computer. MacBook Pro 15' touchscreen 16gb memory. os Mojave 10.14.2 and I record on an ssd external hard drive.
I need a solution. this is my job and if I am not 100% sure that everything will work fine so what else can I do?