Throw meaningful error when instantiating undefined type
Throw meaningful error when instantiating undefined type

aiguofer/bokeh,clairetang6/bokeh,bokeh/bokeh,mindriot101/bokeh,KasperPRasmussen/bokeh,azjps/bokeh,percyfal/bokeh,schoolie/bokeh,draperjames/bokeh,DuCorey/bokeh,stonebig/bokeh,percyfal/bokeh,KasperPRasmussen/bokeh,KasperPRasmussen/bokeh,philippjfr/bokeh,draperjames/bokeh,bokeh/bokeh,rs2/bokeh,KasperPRasmussen/bokeh,justacec/bokeh,stonebig/bokeh,schoolie/bokeh,draperjames/bokeh,aiguofer/bokeh,dennisobrien/bokeh,philippjfr/bokeh,ericmjl/bokeh,phobson/bokeh,ptitjano/bokeh,DuCorey/bokeh,percyfal/bokeh,Karel-van-de-Plassche/bokeh,stonebig/bokeh,aavanian/bokeh,quasiben/bokeh,jakirkham/bokeh,justacec/bokeh,aavanian/bokeh,philippjfr/bokeh,timsnyder/bokeh,DuCorey/bokeh,schoolie/bokeh,timsnyder/bokeh,ericmjl/bokeh,DuCorey/bokeh,rs2/bokeh,justacec/bokeh,Karel-van-de-Plassche/bokeh,ericmjl/bokeh,azjps/bokeh,ptitjano/bokeh,rs2/bokeh,stonebig/bokeh,Karel-van-de-Plassche/bokeh,timsnyder/bokeh,ptitjano/bokeh,azjps/bokeh,KasperPRasmussen/bokeh,Karel-van-de-Plassche/bokeh,rs2/bokeh,aiguofer/bokeh,timsnyder/bokeh,azjps/bokeh,aavanian/bokeh,phobson/bokeh,aiguofer/bokeh,phobson/bokeh,philippjfr/bokeh,aiguofer/bokeh,ericmjl/bokeh,rs2/bokeh,jakirkham/bokeh,bokeh/bokeh,azjps/bokeh,dennisobrien/bokeh,dennisobrien/bokeh,timsnyder/bokeh,clairetang6/bokeh,clairetang6/bokeh,ericmjl/bokeh,schoolie/bokeh,aavanian/bokeh,dennisobrien/bokeh,aavanian/bokeh,justacec/bokeh,Karel-van-de-Plassche/bokeh,bokeh/bokeh,jakirkham/bokeh,quasiben/bokeh,draperjames/bokeh,dennisobrien/bokeh,quasiben/bokeh,philippjfr/bokeh,phobson/bokeh,phobson/bokeh,mindriot101/bokeh,percyfal/bokeh,percyfal/bokeh,clairetang6/bokeh,schoolie/bokeh,draperjames/bokeh,mindriot101/bokeh,ptitjano/bokeh,ptitjano/bokeh,jakirkham/bokeh,DuCorey/bokeh,bokeh/bokeh,jakirkham/bokeh,mindriot101/bokeh