digianto error warning select fast

[Alex97]

I clicked quickly select in a drawing that I had exploded before then select it and delete the covering units, but continues to release me this notice?
I attach the file to this link.https: /1drv.ms/u/s!apjbob_xj35udulqtin1qqwThank you.

 

[Cristallo]

Alex, are you young man 60?