Illager banner is spelled as block.minecraft.illager_banner instead of just Illager Banner like it was in previous versions. See photo below:
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Environment
i5 @ 3.20 GHz
GTX 745 4GB
60 FPS
Updated Java (1.8.0_201 64 bit)
MC-148525
Illager Banner Named Incorrectly
Resolved
Duplicate
0
Already opened in MC-148117