There is still this problem. I guess that you should protect this with existsAs and a fallback to the old parameters in case there is no change to the HLT at the same time.

You have changed the input from two strings to an input tag, but this change is not propagated the change to the HLT. Please keep the same parameters, or coordinate this with the HLT. I get the error:

[1] Constructing module: class=HybridClusterProducer label='hltHybridSuperClustersActivity'
Exception Message:
MissingParameter: Parameter 'recHitsCollection' not found.