Canon MG6800 Series Online Manual page 818

3413
Cause
Prevent paper abrasion has been set.
What to Do
If you continue printing in the current setting, tap Yes.
Prevent paper abrasion may reduce the print speed.
If you disable this setting, tap No. Press the HOME button, select Setup, Device settings, and Print
settings, and then set Prevent paper abrasion to OFF.
818