Every Histogram example I have tried in Mathematica 12.1 gives a warning, although it also displays the histogram correctly.
For instance:
Histogram[RandomVariate[NormalDistribution[0,1],200]]
gives
Set::shape: Lists {Histogram`HistogramListDump`prmin$131925,Histogram`HistogramListDump`prmax$131925} and Charting`computeSceneRange[1][{...list of numbers...},<<1>>,{0.,0.}] are not the same shape.
Is there some magic update I need to apply?