Please read the error message.
Seems like cbc block has not been updated since the change from ufl to ufl_legacy.
It would mean that you either have to roll back your dolfin installation, or fix the import statement in cbc block, as shown in
Please read the error message.
Seems like cbc block has not been updated since the change from ufl to ufl_legacy.
It would mean that you either have to roll back your dolfin installation, or fix the import statement in cbc block, as shown in