❯ opcua-client
Traceback (most recent call last):
  File "/snap/opcua-client/14/bin/opcua-client", line 33, in <module>
    sys.exit(load_entry_point('opcua-client==0.8.0', 'console_scripts', 'opcua-client')())
  File "/snap/opcua-client/14/lib/python3.6/site-packages/pkg_resources/__init__.py", line 473, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/snap/opcua-client/14/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2843, in load_entry_point
    return ep.load()
  File "/snap/opcua-client/14/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2447, in load
    return self.resolve()
  File "/snap/opcua-client/14/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2453, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/snap/opcua-client/14/lib/python3.6/site-packages/uaclient/mainwindow.py", line 12, in <module>
    from asyncua import ua
  File "/snap/opcua-client/14/lib/python3.6/site-packages/asyncua/__init__.py", line 6, in <module>
    from .client import Client
  File "/snap/opcua-client/14/lib/python3.6/site-packages/asyncua/client/__init__.py", line 1, in <module>
    from .client import Client
  File "/snap/opcua-client/14/lib/python3.6/site-packages/asyncua/client/client.py", line 18, in <module>
    from ..crypto import uacrypto, security_policies
  File "/snap/opcua-client/14/lib/python3.6/site-packages/asyncua/crypto/uacrypto.py", line 15, in <module>
    from dataclasses import dataclass
ModuleNotFoundError: No module named 'dataclasses'