Hello.
I've tried to start workflow and i have this error:

Any suggestions?
EDIT:
I've tried deploying workflow already created by OpenKM with "number to guess":

I've got the same error. What do i do wrong?
I've tried to start workflow and i have this error:

Any suggestions?
EDIT:
I've tried deploying workflow already created by OpenKM with "number to guess":

I've got the same error. What do i do wrong?