exceptions.ImportError: cannot import name raise_from
leap-mx on pangolin doesn't start anymore after upgrade to 0.9.1+0~20170911202149.18158 today:
Sep 12 15:13:18 pangolin systemd[1]: Started Leap MX.
Sep 12 15:13:19 pangolin python[29646]: Unhandled Error
Sep 12 15:13:19 pangolin python[29646]: Traceback (most recent call last):
Sep 12 15:13:19 pangolin python[29646]: File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 643, in run
Sep 12 15:13:19 pangolin python[29646]: runApp(config)
Sep 12 15:13:19 pangolin python[29646]: File "/usr/lib/python2.7/dist-packages/twisted/scripts/twistd.py", line 25, in runApp
Sep 12 15:13:19 pangolin python[29646]: _SomeApplicationRunner(config).run()
Sep 12 15:13:19 pangolin python[29646]: File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 374, in run
Sep 12 15:13:19 pangolin python[29646]: self.application = self.createOrGetApplication()
Sep 12 15:13:19 pangolin python[29646]: File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 439, in createOrGetApplication
Sep 12 15:13:19 pangolin python[29646]: application = getApplication(self.config, passphrase)
Sep 12 15:13:19 pangolin python[29646]: --- <exception caught here> ---
Sep 12 15:13:19 pangolin python[29646]: File "/usr/lib/python2.7/dist-packages/twisted/application/app.py", line 450, in getApplication
Sep 12 15:13:19 pangolin python[29646]: application = service.loadApplication(filename, style, passphrase)
Sep 12 15:13:19 pangolin python[29646]: File "/usr/lib/python2.7/dist-packages/twisted/application/service.py", line 411, in loadApplication
Sep 12 15:13:19 pangolin python[29646]: passphrase)
Sep 12 15:13:19 pangolin python[29646]: File "/usr/lib/python2.7/dist-packages/twisted/persisted/sob.py", line 224, in loadValueFromFile
Sep 12 15:13:19 pangolin python[29646]: eval(codeObj, d, d)
Sep 12 15:13:19 pangolin python[29646]: File "/usr/share/app/mx.tac", line 24, in <module>
Sep 12 15:13:19 pangolin python[29646]: from leap.mx import soledadhelper
Sep 12 15:13:19 pangolin python[29646]: File "/usr/lib/python2.7/dist-packages/leap/mx/soledadhelper.py", line 27, in <module>
Sep 12 15:13:19 pangolin python[29646]: from six import raise_from
Sep 12 15:13:19 pangolin python[29646]: exceptions.ImportError: cannot import name raise_from
Sep 12 15:13:19 pangolin python[29646]: Failed to load application: cannot import name raise_from