Why is the txt I generated like this？

[cyqqq]

result_eptest.txt:

A plane is too large to fit in a grocery store, and a plane is too large to fit in a plane. It is too large to fit in a
the time of the time of the time of the time of the time of the time of the time. time. and the time of the time of
A dragon is too big to be ridden on a dragon's body. and a dragon is too big to be ridden on a dragon's body. and

What caused this？Thank you~