Added possible cause to shape implictNotFound error
Added possible cause to shape implictNotFound error

Stumbled upon issue #1127, which ended up pointing to the correct solution. Figured that adding this to the error message could save someone else from headache.
xavier-fernandez/slick,xavier-fernandez/slick,nafg/slick,trevorsibanda/slick,kwark/slick,nremond/slick,nremond/slick,Radsaggi/slick,xavier-fernandez/slick,marko-asplund/slick,nremond/slick,Asamsig/slick,Radsaggi/slick