Model - From 3:44 to 3:52, Sky Lark is shown to have part of his crotch missing.
At 3:48, both the clinking sound from the bottles as well as Jaune's fall are not in sync with the visuals. (This was later fixed on the YouTube version of the episode.)
Animation - At 4:28, we can clearly see an animation error in Lie Ren's hand, as it is pointing almost straight up in a broken sort of manner.
Model - At 4:29, while Nora is drinking the red sap, Ren is supposedly filling another jar, but even though the sound effect plays, the jar is empty. Also, for the split second between 4:28 and 4:29, the jar seems to flicker.
Animation - At 5:24, Jaune is gripping the neck of the jar and the jar is tilted downwards, but at 5:27, Jaune is gripping lower down the jar and the jar is tilted upwards.