ERROR [dagobah.daemon.daemon]

[zhenlongbai]

I create a job named 'test' with 2 tasks ,then I create a new job named 'newJob2' with new task name 'echo' . But when I click the 'view' .I get the follow error .

Starting app on 0.0.0.0:9876 Exception in thread Thread-1: Traceback (most recent call last): File "/usr/local/lib/python2.7/threading.py", line 551, in __bootstrap_inner self.run() File "/usr/local/lib/python2.7/site-packages/dagobah/core/components.py", line 114, in run job.start() File "/usr/local/lib/python2.7/site-packages/dagobah/core/core.py", line 386, in start self.initialize_snapshot() File "/usr/local/lib/python2.7/site-packages/dagobah/core/core.py", line 669, in initialize_snapshot raise DagobahError(reason) DagobahError: no independent nodes detected

ERROR [dagobah.daemon.daemon] Exception on /job/1/echo [GET] Traceback (most recent call last): File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1687, in wsgi_app response = self.full_dispatch_request() File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1360, in full_dispatch_request rv = self.handle_user_exception(e) File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1358, in full_dispatch_request rv = self.dispatch_request() File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1344, in dispatch_request return self.view_functionsrule.endpoint File "/usr/local/lib/python2.7/site-packages/flask_login.py", line 663, in decorated_view return func(_args, *_kwargs) File "/usr/local/lib/python2.7/site-packages/dagobah/daemon/views.py", line 50, in task_detail if task['name'] == task_name][0]) IndexError: list index out of range ERROR [dagobah.daemon.daemon] Exception on /job/1/echo [GET] Traceback (most recent call last): File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1687, in wsgi_app response = self.full_dispatch_request() File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1360, in full_dispatch_request rv = self.handle_user_exception(e) File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1358, in full_dispatch_request rv = self.dispatch_request() File "/usr/local/lib/python2.7/site-packages/flask/app.py", line 1344, in dispatch_request return self.view_functionsrule.endpoint File "/usr/local/lib/python2.7/site-packages/flask_login.py", line 663, in decorated_view return func(_args, *_kwargs) File "/usr/local/lib/python2.7/site-packages/dagobah/daemon/views.py", line 50, in task_detail if task['name'] == task_name][0]) IndexError: list index out of range