Run fault with non-zero 1

[JXH-sanitizer]

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Thanks for your sharing about the workflow of Pest and flopy. I have tried your codes but in the last cell, it returns a fault called: " 124 if "window" in platform.platform().lower(): 125 if ret_val != 0:

126 raise Exception("run() returned non-zero: {0}".format(ret_val)) 127 else: 128 estat = os.WEXITSTATUS(ret_val)

Exception: run() returned non-zero: 1" Can you suggest why does it happen? I am not sure. Thank you all in all.