Model info: https://civitai.com/models/84604/nk15
if you use this model in your diffusers, show some AutoencoderKL errors, Don't worry, just use the codes below, you can still generate images :)
modelid="digiplay/nk15_diffusers"
from diffusers.models import AutoencoderKL
vae = AutoencoderKL.from_pretrained("stabilityai/sd-vae-ft-mse")
pipe = DiffusionPipeline.from_pretrained(modelid, vae=vae)