P1s print failed at half way

[user_1935682491]

Printing a tall slender item with tpu and a 0.6 nozzle. Filament has been dried for several hours and was feeding from the active drier. The head was moving slowly. In the picture the good part was about 6 hours into the job, the bad part was another 6 hours. The red object is a spacer that was inserted during a pause to create a bridge, it was well below the failure layer.

[user_1935682491]

In the first picture you can see a small blob to the left of the object, here is a closeup. Looks like a tiny bit of tissue paper embedded in the filament. No idea where that came from. Also looks like a brown hair in the same blob.