This happened for the first time. The end of the filament got stuck in the wheel located behind the P1S printer. The head was printing with air, and the print status changed to Success. However, in reality, the batch of products went for recycling.
As a temporary solution - just covered the hole with tape. I see there are models of plugs at Makerworld. I think I will print one for myself. But there the motivation is dust protection.
Before this, there was a situation when the filament got stuck in the spool. The result was the same. And the twist - the same situation: https://tseivo.com/b/heheprint/t/Pz1MpxKkxz/vpershe-natrapyv-na-perekrut-nytky-filamentu