Traceback (most recent call last):


 "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2447, in wsgi_app

response = self.full_dispatch_request()


 "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1952, in full_dispatch_request

rv = self.handle_user_exception(e)


 "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1821, in handle_user_exception

reraise(exc_type, exc_value, tb)


 "/usr/local/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise

raise value


 "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1950, in full_dispatch_request

rv = self.dispatch_request()


 "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1936, in dispatch_request

return self.view_functions[rule.endpoint](**req.view_args)


 "/opt/airflow/airflow/www/decorators.py", line 126, in wrapper

return f(self, *args, **kwargs)


 "/usr/local/lib/python3.7/site-packages/flask_appbuilder/security/decorators.py", line 109, in wraps

return f(self, *args, **kwargs)


 "/opt/airflow/airflow/www/decorators.py", line 61, in wrapper

return f(*args, **kwargs)


 "/opt/airflow/airflow/utils/session.py", line 65, in wrapper

return func(*args, **kwargs)


 "/opt/airflow/airflow/www/views.py", line 2119, in refresh

dag = current_app.dag_bag.get_dag(dag_id)


 "/opt/airflow/airflow/models/dagbag.py", line 191, in get_dag

is_expired = (orm_dag.last_expired and dag.last_loaded < orm_dag.last_expired)
AttributeError: 'NoneType' object has no attribute 'last_loaded'

Traceback (most recent call last):


 "/home/fiza/anaconda3/envs/pupil_labs/pupil/pupil_src/launchables/player.py", line 768, in player_drop

window = glfw.glfwCreateWindow(w, h, "Pupil Player")


 "/home/fiza/anaconda3/envs/pupil_labs/pupil/pupil_src/shared_modules/glfw.py", line 566, in glfwCreateWindow

raise Exception(f"GLFW window failed to create: {glfwGetError()}")


 "/home/fiza/anaconda3/envs/pupil_labs/pupil/pupil_src/shared_modules/glfw.py", line 512, in glfwGetError

_glfwGetError = _glfw.glfwGetError


 "/home/fiza/anaconda3/envs/pupil_labs/lib/python3.8/ctypes/__init__.py", line 386, in __getattr__

func = self.__getitem__(name)


 "/home/fiza/anaconda3/envs/pupil_labs/lib/python3.8/ctypes/__init__.py", line 391, in __getitem__

func = self._FuncPtr((name_or_ordinal, self))
AttributeError: /usr/lib/x86_64-linux-gnu/libglfw.so.3: undefined symbol: glfwGetError
