When does an EOFError occur?

Question

I tried writing a code with a while loop, it keeps giving me an EOFError. But while using python 3.7.* IDLE it has no issues.
import random
comGuess=random.randint(0,100)
while True:
userGuess=int(input())
if userGuess>comGuess:
print("Guess higher")
elif userGuess<comGuess:
print("Guess lower")
else:
print("congrats, you have guessed correctly")
break

Answer 1

break should be in alignment with while true statement and not with if or else statements

Answer 2

SoloLearn doesn't provide a live console, so you are expected to provide all input prior to code interpretation. This is, however, infeasible in this situation.