Minecraft PBR is not compatible with Minecraft PBR

I was playing in the last preview of minecraft Bedrock and I wanted to use PBR shaders but they didn't work for me, I activated the option of "render dragon for creators" to make them work and nothing, then I saw that I got this error but this error is new, before it didn't appear, I tried with other PBR shaders but the story is the same, I can't turn on the deferred shaders