Opennebula connection is broken due to failure to re-new authentication tokens

2019-08-14 00:00:28,076 ERROR:opennebula.py:187(23943): Failed to re-new authentication token: (4096, '[one.user.login] Max number of tokens limit reached.')
ESC[31mTraceback (most recent call last):
  File "/home/vmbuilder/qt-ci/src/opennebula/opennebula.py", line 185, in refresh_token
    old_token = await self._refresh_token(one)
  File "/home/vmbuilder/qt-ci/src/opennebula/opennebula.py", line 202, in _refresh_token
    new_token = await one.user.login(user, "", -1, -1)
  File "/home/vmbuilder/qt-ci/src/opennebula/opennebula.py", line 132, in __call__
    result = await asyncio.wait_for(f, timeout=15 * 60, loop=loop)
  File "/usr/lib/python3.6/asyncio/tasks.py", line 358, in wait_for
    return fut.result()
  File "/usr/lib/python3.6/concurrent/futures/thread.py", line 56, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/home/vmbuilder/qt-ci/src/opennebula/opennebula.py", line 120, in callSync
    raise ONEException(errorCode, data)
opennebula.opennebula.ONEException: (4096, '[one.user.login] Max number of tokens limit reached.')ESC[0m