Version: 1.15.2
In this line:
https://github.com/Vazkii/Quark/blob/master/src/main/java/vazkii/quark/tweaks/client/emote/EmoteSound.java#L74
It is work in af7e66d ,but change from 687fae6
You can use this code fix it.

if (player == null || !player.isAlive())
    donePlaying = true;

Thanks.