Missing print no errors

Sent a small (10 cm by 10 cm) item to print in the Form 3 and at the end the build plate was empty. Didn’t find any parts swimming in the resin tank but could notice outline of the print on the bottom of the tank surface. No errors appeared and the print didn’t raise any warnings when preparing in PreForm. Any ideas?
Annotation%202020-04-01%20082939