Catch unit runtime error @ AtomS3

[m5stackfun]

When I try to run a program created with UIFlow v2.2.2,

The program does not work on AtomS3 with the following error message.

Traceback (most recent call last):
File "<stdin>", line 18, in <module>
File "<stdin>", line 10, in setup
File "unit/catch.py", line 47, in init
ValueError: unreachable frequency 50.

What should I do?

Thank you in advance.