cubicweb-registration #3444010 broken by cubicweb 3.19 [validation pending]

Session handling changes broke the registration confirmation controller.

prioritynormal
typetask
done in0.5.0
load0.500
load left0.000
closed by#757269bac134 [views] Convert registration_confirm controller to cubicweb 3.19 API
patch[views] Convert registration_confirm controller to cubicweb 3.19 API [applied]