diffusers safetensors stable-diffusion stable-diffusion-diffusers text-to-image controlnet diffusers-training base_model:SG161222/Realistic_Vision_V6.0_B1_noVAE base_model:adapter:SG161222/Realistic_Vision_V6.0_B1_noVAE license:creativeml-openrail-m region:us