Error in imtile (line 157)

I'm using imtile function but it shows below error. Please comment if possible. Thnaks

Error using images.internal.createMontage

Too many input arguments.

Error in imtile (line 157)

out = images.internal.createMontage(Isrc, thumbnailSize,...

Error in AlexNetFeature (line 10)

I=imtile(I,'ThumbnailSize',[64 64]);