Python3.8 error in "check" mode of "Life counter"

I passed "Life counter" mission on my PC (python 3.7.3),
but in "check" mode on checkio, an error caused.

Traceback (most recent call last):, File "/home/site/checkio/runners/py32.py", line 252, in echo_send_recv_json, data_send = json.dumps(send), File "/usr/local/lib/python3.8/json/__init__.py", line 231, in dumps, return _default_encoder.encode(obj), File "/usr/local/lib/python3.8/json/encoder.py", line 199, in encode, chunks = self.iterencode(o, _one_shot=True), File "/usr/local/lib/python3.8/json/encoder.py", line 257, in iterencode, return _iterencode(o, 0), File "/usr/local/lib/python3.8/json/encoder.py", line 179, in default, raise TypeError(f'Object of type {o.__class__.__name__} ',TypeError: Object of type int64 is not JSON serializable,,During handling of the above exception, another exception occurred:,,Traceback (most recent call last):, File "/home/site/checkio/runners/py32.py", line 486, in <module>, run_data = echo_send_recv_json(globals()['do_' + run_data['do']](run_data)), File "/home/site/checkio/runners/py32.py", line 255, in echo_send_recv_json, error = u'TypeError: {0} is wrong data type'.format(cgi.escape(str(type(result)))),AttributeError: module 'cgi' has no attribute 'escape',

Does anybody help me?