can`t get lng of point by using L.vectorGrid.protobuf

[k2etrookie]

hi guys!
while using L.vectorGrid.protobuf to render some points in my program, after click the point to open popup.this bug comes out: ' Cannot read property 'lng' of undefined' .
Ive already read #168 #148 #157 and try to set 'layer.getLatLng = null;' but it didnt work as well. how could I change the circlemarker into point?

[k2etrookie]

this issue was closed! thanks to @chriszrc and @perliedman; thank you so much .this issue already cost me 1week . thanks again!!!
#157