[pv/mt] Empty hash generation failure

[nrybowski]

mt_manager_1         | [2021-12-21 12:31:21 +0000] [8] [ERROR] Exception in worker process
mt_manager_1         | Traceback (most recent call last):
mt_manager_1         |   File "/usr/lib/python3.8/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
mt_manager_1         |     worker.init_process()
mt_manager_1         |   File "/usr/lib/python3.8/site-packages/gunicorn/workers/base.py", line 119, in init_process
mt_manager_1         |     self.load_wsgi()
mt_manager_1         |   File "/usr/lib/python3.8/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
mt_manager_1         |     self.wsgi = self.app.wsgi()
mt_manager_1         |   File "/usr/lib/python3.8/site-packages/gunicorn/app/base.py", line 67, in wsgi
mt_manager_1         |     self.callable = self.load()
mt_manager_1         |   File "/usr/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
mt_manager_1         |     return self.load_wsgiapp()
mt_manager_1         |   File "/usr/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 39, in load
_wsgiapp
mt_manager_1         |     return util.import_app(self.app_uri)
mt_manager_1         |   File "/usr/lib/python3.8/site-packages/gunicorn/util.py", line 358, in import_app
mt_manager_1         |     mod = importlib.import_module(module)
mt_manager_1         |   File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
mt_manager_1         |     return _bootstrap._gcd_import(name[level:], package, level)
mt_manager_1         |   File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
mt_manager_1         |   File "<frozen importlib._bootstrap>", line 991, in _find_and_load
mt_manager_1         |   File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
mt_manager_1         |   File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
mt_manager_1         |   File "<frozen importlib._bootstrap_external>", line 848, in exec_module
mt_manager_1         |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
mt_manager_1         |   File "/pv/mt_manager/api.py", line 3, in <module>
mt_manager_1         |     from  pv.mt_manager import manager as manager
mt_manager_1         |   File "/pv/mt_manager/manager.py", line 9, in <module>
mt_manager_1         |     from util import mt
mt_manager_1         |   File "/util/mt.py", line 11, in <module>
mt_manager_1         |     EMPTY_HASH = bytes.fromhex(hex(randbits(EMPTY_HASH_SIZE))[2:])
mt_manager_1         | ValueError: non-hexadecimal number found in fromhex() arg at position 63