title: sqllite error when running airflow scheduler on mac
body: <p>I keep getting the error below when running airflow? any ideas? This happens as soon as i kick off the airflow scheduler. It was previously working but seems to have stopped when i updated my mac.</p>
  <pre><code>Traceback (most recent call last):
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/engine/base.py&quot;, line 1248, in _execute_context
      cursor, statement, parameters, context
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/engine/default.py&quot;, line 588, in do_execute
      cursor.execute(statement, parameters)
  sqlite3.OperationalError: no such table: job
  </code></pre>
  <p>and then the following traceback</p>
  <pre><code>The above exception was the direct cause of the following exception:
  
  Traceback (most recent call last):
    File &quot;/Users/user1/.pyenv/versions/3.6.10/bin/airflow&quot;, line 37, in &lt;module&gt;
      args.func(args)
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/airflow/utils/cli.py&quot;, line 76, in wrapper
      return f(*args, **kwargs)
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/airflow/bin/cli.py&quot;, line 1221, in scheduler
      job.run()
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/airflow/jobs/base_job.py&quot;, line 212, in run
      session.commit()
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/session.py&quot;, line 1036, in commit
      self.transaction.commit()
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/session.py&quot;, line 503, in commit
      self._prepare_impl()
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/session.py&quot;, line 482, in _prepare_impl
      self.session.flush()
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/session.py&quot;, line 2496, in flush
      self._flush(objects)
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/session.py&quot;, line 2637, in _flush
      transaction.rollback(_capture_exception=True)
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/util/langhelpers.py&quot;, line 69, in __exit__
      exc_value, with_traceback=exc_tb,
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/util/compat.py&quot;, line 178, in raise_
      raise exception
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/session.py&quot;, line 2597, in _flush
      flush_context.execute()
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/unitofwork.py&quot;, line 422, in execute
      rec.execute(self)
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/unitofwork.py&quot;, line 589, in execute
      uow,
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/persistence.py&quot;, line 245, in save_obj
      insert,
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/orm/persistence.py&quot;, line 1136, in _emit_insert_statements
      statement, params
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/engine/base.py&quot;, line 984, in execute
      return meth(self, multiparams, params)
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/sql/elements.py&quot;, line 293, in _execute_on_connection
      return connection._execute_clauseelement(self, multiparams, params)
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/engine/base.py&quot;, line 1103, in _execute_clauseelement
      distilled_params,
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/engine/base.py&quot;, line 1288, in _execute_context
      e, statement, parameters, cursor, context
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/engine/base.py&quot;, line 1482, in _handle_dbapi_exception
      sqlalchemy_exception, with_traceback=exc_info[2], from_=e
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/util/compat.py&quot;, line 178, in raise_
      raise exception
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/engine/base.py&quot;, line 1248, in _execute_context
      cursor, statement, parameters, context
    File &quot;/Users/user1/.pyenv/versions/3.6.10/lib/python3.6/site-packages/sqlalchemy/engine/default.py&quot;, line 588, in do_execute
      cursor.execute(statement, parameters)
  sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such table: job
  [SQL: INSERT INTO job (dag_id, state, job_type, start_date, end_date, latest_heartbeat, executor_class, hostname, unixname) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)]
  [parameters: (None, 'running', 'SchedulerJob', '2020-12-10 23:11:18.838822', None, '2020-12-10 23:11:18.838839', 'SequentialExecutor', 'ip-192-168-0-53.us-west-2.compute.internal', 'user1')]
  (Background on this error at: http://sqlalche.me/e/e3q8)
  </code></pre>
  <p>I have tried to downgrade to an older version of sqlalchemy but still the same issues. i am currently using Version: 1.3.15</p>