Items are black when facing one side but not the other

GAMERxPRO

L1: Registered
Feb 7, 2024
1
0
Hello, I'm new to mapping, and while making my first map, I've noticed that these lanterns that you see in the provided screenshots become black when facing a direction, what could be a possible fix for this? (for reference, I think it might be a lighting glitch as my light ent is situated right in front of it, but once again it does not bug when facing the other way. I've also copy pasted each of them, could that be the problem?)
 

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