Error: type UnionAll has no field cluster_detector_hits

[zql2021]

Hello,Sir
Recently, I encountered an error while using

mc_events_clustered=@time SolidStateDetector.cluster_detector_hits(mc_events,0.1u"mm")

The error message is

type UnionAll has no field cluster_detector_hits 
Stacktrace:
[1] getproperty
   @ ./Base.jl:32 [inlined]
 [2] top-level scope
   @ ./timing.jl:273 [inlined]

even though it worked fine before.
I tried reinstalling SolidStateDetectors, but the error still exits. Can you provide some suggestions for this issue? Thank you very much.

[fhagemann]

Looks like a typo to me.
Try SolidStateDetectors.cluster… instead of SolidStateDetector.cluster… (with an extra S)