The vindicator and evoker do not spawn in peaceful mode last time they spawn in peaceful mode
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[media]
This is working as intended per the 1.20.50 changelog:
Vindicators and Evokers can no longer be spawned in a Peaceful world
https://feedback.minecraft.net/hc/en-us/articles/21750153148173-Minecraft-1-20-50-Bedrock