If you removed all of the numerical IDs in MC 1.13,
you should also remove Custom Potion Effects numerical IDs.
For example:
{CustomPotionEffects:[{id:"minecraft:speed",Amplifier:1,Duration:20}]} instead of {CustomPotionEffects:[{Id:1,Amplifier:1,Duration:20}]}
MC-190514
Custom Potion effects
Resolved
Duplicate
0
Gozo
(Unassigned)
Unconfirmed
(Unassigned)
1.15.2, 1.16 Release Candidate 1
Retrieved
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