Johannes - Build Plate Localisation Marker Not Found

@3dtechs

Just had an error on Johannes about not being able to find the build plate localisation mark. It appears to be a bit fainter than the one currently in Robert. I did a google and found this forum post saying that the use of IPA to clean the build plate can cause the markers to rub off.

It doesn’t affect the use of the printer as you can just hit continue and it does it’s thing but thought I should flag.