Blank Output, the Output is Black.

[Rocky-Balbowa]

i have added the .json and the Terminal output, i have aateched 2 files Graph and its Subgraph as images.

What am i doing wrong?

No Output shows on the preview, also No images Saved if i load the save image node. Without image reference It works great.

[INFO] Model WanVAE prepared for dynamic VRAM loading. 241MB Staged. 0 patches attached. Force pre-loaded 60 weights: 61 KB.
[INFO] 0 models unloaded.
[INFO] Model Krea2TEModel_ prepared for dynamic VRAM loading. 4999MB Staged. 0 patches attached. Force pre-loaded 249 weights: 627 KB.
[INFO] 0 models unloaded.
[INFO] Model Krea2 prepared for dynamic VRAM loading. 12224MB Staged. 0 patches attached. Force pre-loaded 160 weights: 1431 KB.
100%|██████████████████████████████████████| 8/8 [00:37<00:00, 4.69s/it]
[INFO] 0 models unloaded.
[INFO] Model WanVAE prepared for dynamic VRAM loading. 241MB Staged. 0 patches attached. Force pre-loaded 60 weights: 61 KB.
[INFO] Prompt executed in 49.30 seconds
[INFO] got prompt
[INFO] Model Krea2 prepared for dynamic VRAM loading. 12224MB Staged. 0 patches attached. Force pre-loaded 160 weights: 1431 KB.
100%|██████████████████████████████████████| 8/8 [00:38<00:00, 4.84s/it]
[INFO] 0 models unloaded.
[INFO] Model WanVAE prepared for dynamic VRAM loading. 241MB Staged. 0 patches attached. Force pre-loaded 60 weights: 61 KB.
[INFO] Prompt executed in 45.37 seconds
[INFO] got prompt
[INFO] Model Krea2 prepared for dynamic VRAM loading. 12224MB Staged. 0 patches attached. Force pre-loaded 160 weights: 1431 KB.
100%|██████████████████████████████████████| 8/8 [00:43<00:00, 5.43s/it]
[INFO] 0 models unloaded.
[INFO] Model WanVAE prepared for dynamic VRAM loading. 241MB Staged. 0 patches attached. Force pre-loaded 60 weights: 61 KB.
[INFO] Prompt executed in 44.13 seconds
[INFO] got prompt
[INFO] Model Krea2 prepared for dynamic VRAM loading. 12224MB Staged. 0 patches attached. Force pre-loaded 160 weights: 1431 KB.
100%|██████████████████████████████████████| 8/8 [00:43<00:00, 5.48s/it]
[INFO] 0 models unloaded.
[INFO] Model WanVAE prepared for dynamic VRAM loading. 241MB Staged. 0 patches attached. Force pre-loaded 60 weights: 61 KB.
[INFO] Prompt executed in 44.41 seconds
[INFO] got prompt
[INFO] Prompt executed in 0.00 seconds
[INFO] got prompt
[INFO] Model Krea2TEModel_ prepared for dynamic VRAM loading. 4999MB Staged. 0 patches attached. Force pre-loaded 249 weights: 627 KB.
[INFO] 0 models unloaded.
[INFO] Model WanVAE prepared for dynamic VRAM loading. 241MB Staged. 0 patches attached. Force pre-loaded 60 weights: 61 KB.
[INFO] 0 models unloaded.
[INFO] Model Krea2TEModel_ prepared for dynamic VRAM loading. 4999MB Staged. 0 patches attached. Force pre-loaded 249 weights: 627 KB.
[INFO] 0 models unloaded.
[INFO] Model Krea2 prepared for dynamic VRAM loading. 12224MB Staged. 0 patches attached. Force pre-loaded 160 weights: 1431 KB.
100%|██████████████████████████████████████| 8/8 [00:38<00:00, 4.78s/it]
[INFO] 0 models unloaded.
[INFO] Model WanVAE prepared for dynamic VRAM loading. 241MB Staged. 0 patches attached. Force pre-loaded 60 weights: 61 KB.
[INFO] Prompt executed in 50.33 seconds
[INFO] got prompt
[INFO] Model Krea2TEModel_ prepared for dynamic VRAM loading. 4999MB Staged. 0 patches attached. Force pre-loaded 249 weights: 627 KB.
[INFO] 0 models unloaded.
[INFO] Model WanVAE prepared for dynamic VRAM loading. 241MB Staged. 0 patches attached. Force pre-loaded 60 weights: 61 KB.
[INFO] 0 models unloaded.
[INFO] Model Krea2TEModel_ prepared for dynamic VRAM loading. 4999MB Staged. 0 patches attached. Force pre-loaded 249 weights: 627 KB.
[INFO] 0 models unloaded.
[INFO] Model Krea2 prepared for dynamic VRAM loading. 12224MB Staged. 0 patches attached. Force pre-loaded 160 weights: 1431 KB.
100%|██████████████████████████████████████| 8/8 [00:38<00:00, 4.76s/it]

{
"id": "9a98fb53-eaa2-4a4b-be37-2c3dc5c77a6f",
"revision": 0,
"last_node_id": 30,
"last_link_id": 45,
"nodes": [
{
"id": 10,
"type": "RandomNoise",
"pos": [
-830,
940
],
"size": [
260,
100
],
"flags": {},
"order": 0,
"mode": 0,
"inputs": [],
"outputs": [
{
"name": "NOISE",
"type": "NOISE",
"links": [
27
]
}
],
"properties": {
"Node name for S&R": "RandomNoise"
},
"widgets_values": [
7,
"randomize"
]
},
{
"id": 2,
"type": "LoadImage",
"pos": [
-540,
740
],
"size": [
290,
320
],
"flags": {},
"order": 1,
"mode": 0,
"inputs": [],
"outputs": [
{
"name": "IMAGE",
"type": "IMAGE",
"links": [
25
]
},
{
"name": "MASK",
"type": "MASK",
"links": null
}
],
"properties": {
"Node name for S&R": "LoadImage"
},
"widgets_values": [
"121283862.png",
"image"
]
},
{
"id": 19,
"type": "PrimitiveStringMultiline",
"pos": [
-610,
1110
],
"size": [
430,
100
],
"flags": {},
"order": 2,
"mode": 0,
"inputs": [],
"outputs": [
{
"name": "STRING",
"type": "STRING",
"links": [
26
]
}
],
"title": "Prompt",
"properties": {
"Node name for S&R": "PrimitiveStringMultiline"
},
"widgets_values": [
"she is cooking in the kitchen. Cinematic movie style. Anime."
],
"color": "#223",
"bgcolor": "#335"
},
{
"id": 18,
"type": "PreviewImage",
"pos": [
-140,
730
],
"size": [
520,
480
],
"flags": {},
"order": 4,
"mode": 0,
"inputs": [
{
"name": "images",
"type": "IMAGE",
"link": 30
}
],
"outputs": [
{
"name": "images",
"type": "IMAGE",
"links": null
}
],
"properties": {
"Node name for S&R": "PreviewImage"
},
"widgets_values": []
},
{
"id": 20,
"type": "d2a9cedf-4262-4bee-b199-047059768fce",
"pos": [
-830,
650
],
"size": [
260,
230
],
"flags": {
"collapsed": false
},
"order": 3,
"mode": 0,
"inputs": [
{
"name": "image",
"shape": 7,
"type": "IMAGE",
"link": 25
},
{
"name": "text",
"type": "STRING",
"link": 26
},
{
"name": "noise",
"type": "NOISE",
"link": 27
}
],
"outputs": [
{
"name": "IMAGE",
"type": "IMAGE",
"links": [
30
]
}
],
"properties": {
"proxyWidgets": [
[
"1",
"unet_name"
],
[
"4",
"clip_name"
],
[
"5",
"vae_name"
],
[
"22",
"aspect_ratio"
],
[
"22",
"megapixels"
]
]
},
"widgets_values": []
}
],
"links": [
[
25,
2,
0,
20,
0,
"IMAGE"
],
[
26,
19,
0,
20,
1,
"STRING"
],
[
27,
10,
0,
20,
2,
"NOISE"
],
[
30,
20,
0,
18,
0,
"IMAGE"
]
],
"groups": [],
"definitions": {
"subgraphs": [
{
"id": "d2a9cedf-4262-4bee-b199-047059768fce",
"version": 1,
"state": {
"lastGroupId": 0,
"lastNodeId": 30,
"lastLinkId": 45,
"lastRerouteId": 0
},
"revision": 0,
"config": {},
"name": "Subgraph",
"inputNode": {
"id": -10,
"bounding": [
-838,
56,
128,
108
]
},
"outputNode": {
"id": -20,
"bounding": [
770,
96,
128,
68
]
},
"inputs": [
{
"id": "e0bf1eb7-bf56-48ab-ac46-e9c5afb65dcf",
"name": "image",
"type": "IMAGE",
"linkIds": [
42
],
"localized_name": "image",
"shape": 7,
"pos": [
-734,
80
]
},
{
"id": "76ad9342-d140-4e83-9b2b-dcc76b9172c0",
"name": "text",
"type": "STRING",
"linkIds": [
31
],
"localized_name": "text",
"pos": [
-734,
100
]
},
{
"id": "5794db0e-1619-4766-8510-f0da9631ecfd",
"name": "noise",
"type": "NOISE",
"linkIds": [
10
],
"localized_name": "noise",
"pos": [
-734,
120
]
}
],
"outputs": [
{
"id": "b585b4d9-1381-4fea-97ee-9d3248dca189",
"name": "IMAGE",
"type": "IMAGE",
"linkIds": [
23
],
"localized_name": "IMAGE",
"pos": [
794,
120
]
}
],
"widgets": [],
"nodes": [
{
"id": 1,
"type": "UNETLoader",
"pos": [
-650,
-190
],
"size": [
270,
90
],
"flags": {},
"order": 0,
"mode": 0,
"inputs": [],
"outputs": [
{
"localized_name": "MODEL",
"name": "MODEL",
"type": "MODEL",
"links": [
8,
17
]
}
],
"properties": {
"Node name for S&R": "UNETLoader"
},
"widgets_values": [
"krea2_turbo_fp8.safetensors",
"default"
]
},
{
"id": 4,
"type": "CLIPLoader",
"pos": [
-650,
-70
],
"size": [
270,
110
],
"flags": {},
"order": 1,
"mode": 0,
"inputs": [],
"outputs": [
{
"localized_name": "CLIP",
"name": "CLIP",
"type": "CLIP",
"links": [
41
]
}
],
"properties": {
"Node name for S&R": "CLIPLoader"
},
"widgets_values": [
"qwen3vl_4b_fp8_scaled.safetensors",
"krea2",
"default"
]
},
{
"id": 5,
"type": "VAELoader",
"pos": [
-650,
80
],
"size": [
270,
60
],
"flags": {},
"order": 2,
"mode": 0,
"inputs": [],
"outputs": [
{
"localized_name": "VAE",
"name": "VAE",
"type": "VAE",
"links": [
22,
43
]
}
],
"properties": {
"Node name for S&R": "VAELoader"
},
"widgets_values": [
"qwen_image_vae.safetensors"
]
},
{
"id": 22,
"type": "ResolutionSelector",
"pos": [
-640,
250
],
"size": [
260,
130
],
"flags": {},
"order": 3,
"mode": 0,
"inputs": [],
"outputs": [
{
"localized_name": "width",
"name": "width",
"type": "INT",
"links": [
33
]
},
{
"localized_name": "height",
"name": "height",
"type": "INT",
"links": [
34
]
}
],
"properties": {
"Node name for S&R": "ResolutionSelector",
"cnr_id": "comfy-core",
"ver": "0.25.0"
},
"widgets_values": [
"1:1 (Square)",
1,
8
]
},
{
"id": 8,
"type": "BasicGuider",
"pos": [
110,
30
],
"size": [
160,
50
],
"flags": {},
"order": 7,
"mode": 0,
"inputs": [
{
"localized_name": "model",
"name": "model",
"type": "MODEL",
"link": 8
},
{
"localized_name": "conditioning",
"name": "conditioning",
"type": "CONDITIONING",
"link": 44
}
],
"outputs": [
{
"localized_name": "GUIDER",
"name": "GUIDER",
"type": "GUIDER",
"links": [
9
]
}
],
"properties": {
"Node name for S&R": "BasicGuider"
},
"widgets_values": []
},
{
"id": 16,
"type": "KSamplerSelect",
"pos": [
90,
120
],
"size": [
210,
60
],
"flags": {},
"order": 4,
"mode": 0,
"inputs": [],
"outputs": [
{
"localized_name": "SAMPLER",
"name": "SAMPLER",
"type": "SAMPLER",
"links": [
19
]
}
],
"properties": {
"Node name for S&R": "KSamplerSelect"
},
"widgets_values": [
"euler"
]
},
{
"id": 15,
"type": "BasicScheduler",
"pos": [
90,
220
],
"size": [
210,
110
],
"flags": {},
"order": 5,
"mode": 0,
"inputs": [
{
"localized_name": "model",
"name": "model",
"type": "MODEL",
"link": 17
}
],
"outputs": [
{
"localized_name": "SIGMAS",
"name": "SIGMAS",
"type": "SIGMAS",
"links": [
18
]
}
],
"properties": {
"Node name for S&R": "BasicScheduler"
},
"widgets_values": [
"simple",
8,
1
]
},
{
"id": 9,
"type": "SamplerCustomAdvanced",
"pos": [
320,
0
],
"size": [
220,
330
],
"flags": {},
"order": 8,
"mode": 0,
"inputs": [
{
"localized_name": "noise",
"name": "noise",
"type": "NOISE",
"link": 10
},
{
"localized_name": "guider",
"name": "guider",
"type": "GUIDER",
"link": 9
},
{
"localized_name": "sampler",
"name": "sampler",
"type": "SAMPLER",
"link": 19
},
{
"localized_name": "sigmas",
"name": "sigmas",
"type": "SIGMAS",
"link": 18
},
{
"localized_name": "latent_image",
"name": "latent_image",
"type": "LATENT",
"link": 14
}
],
"outputs": [
{
"localized_name": "output",
"name": "output",
"type": "LATENT",
"links": [
21
]
},
{
"localized_name": "denoised_output",
"name": "denoised_output",
"type": "LATENT",
"links": []
}
],
"properties": {
"Node name for S&R": "SamplerCustomAdvanced"
},
"widgets_values": []
},
{
"id": 17,
"type": "VAEDecode",
"pos": [
560,
-150
],
"size": [
140,
50
],
"flags": {},
"order": 9,
"mode": 0,
"inputs": [
{
"localized_name": "samples",
"name": "samples",
"type": "LATENT",
"link": 21
},
{
"localized_name": "vae",
"name": "vae",
"type": "VAE",
"link": 22
}
],
"outputs": [
{
"localized_name": "IMAGE",
"name": "IMAGE",
"type": "IMAGE",
"links": [
23
]
}
],
"properties": {
"Node name for S&R": "VAEDecode"
},
"widgets_values": []
},
{
"id": 13,
"type": "EmptyLatentImage",
"pos": [
90,
370
],
"size": [
210,
110
],
"flags": {},
"order": 6,
"mode": 0,
"inputs": [
{
"localized_name": "width",
"name": "width",
"type": "INT",
"widget": {
"name": "width"
},
"link": 33
},
{
"localized_name": "height",
"name": "height",
"type": "INT",
"widget": {
"name": "height"
},
"link": 34
}
],
"outputs": [
{
"localized_name": "LATENT",
"name": "LATENT",
"type": "LATENT",
"slot_index": 0,
"links": [
14
]
}
],
"properties": {
"Node name for S&R": "EmptyLatentImage",
"cnr_id": "comfy-core",
"ver": "0.25.0"
},
"widgets_values": [
1024,
1024,
1
]
},
{
"id": 21,
"type": "Reroute",
"pos": [
-550,
160
],
"size": [
80,
30
],
"flags": {},
"order": 10,
"mode": 0,
"inputs": [
{
"name": "",
"type": "",
"link": 31
}
],
"outputs": [
{
"name": "",
"type": "",
"links": [
45
]
}
],
"properties": {
"showOutputText": false,
"horizontal": false
}
},
{
"id": 29,
"type": "Krea2EditRebalance",
"pos": [
-310,
-50
],
"size": [
330,
130
],
"flags": {},
"order": 11,
"mode": 0,
"inputs": [
{
"localized_name": "clip",
"name": "clip",
"type": "CLIP",
"link": 41
},
{
"localized_name": "vae",
"name": "vae",
"type": "VAE",
"link": 43
},
{
"localized_name": "image",
"name": "image",
"shape": 7,
"type": "IMAGE",
"link": 42
},
{
"localized_name": "text",
"name": "text",
"type": "STRING",
"widget": {
"name": "text"
},
"link": 45
}
],
"outputs": [
{
"localized_name": "conditioning",
"name": "conditioning",
"type": "CONDITIONING",
"links": [
44
]
}
],
"properties": {
"Node name for S&R": "Krea2EditRebalance"
},
"widgets_values": [
""
]
}
],
"groups": [],
"links": [
{
"id": 8,
"origin_id": 1,
"origin_slot": 0,
"target_id": 8,
"target_slot": 0,
"type": "MODEL"
},
{
"id": 17,
"origin_id": 1,
"origin_slot": 0,
"target_id": 15,
"target_slot": 0,
"type": "MODEL"
},
{
"id": 9,
"origin_id": 8,
"origin_slot": 0,
"target_id": 9,
"target_slot": 1,
"type": "GUIDER"
},
{
"id": 19,
"origin_id": 16,
"origin_slot": 0,
"target_id": 9,
"target_slot": 2,
"type": "SAMPLER"
},
{
"id": 18,
"origin_id": 15,
"origin_slot": 0,
"target_id": 9,
"target_slot": 3,
"type": "SIGMAS"
},
{
"id": 14,
"origin_id": 13,
"origin_slot": 0,
"target_id": 9,
"target_slot": 4,
"type": "LATENT"
},
{
"id": 21,
"origin_id": 9,
"origin_slot": 0,
"target_id": 17,
"target_slot": 0,
"type": "LATENT"
},
{
"id": 22,
"origin_id": 5,
"origin_slot": 0,
"target_id": 17,
"target_slot": 1,
"type": "VAE"
},
{
"id": 10,
"origin_id": -10,
"origin_slot": 2,
"target_id": 9,
"target_slot": 0,
"type": "NOISE"
},
{
"id": 23,
"origin_id": 17,
"origin_slot": 0,
"target_id": -20,
"target_slot": 0,
"type": "IMAGE"
},
{
"id": 31,
"origin_id": -10,
"origin_slot": 1,
"target_id": 21,
"target_slot": 0,
"type": "*"
},
{
"id": 33,
"origin_id": 22,
"origin_slot": 0,
"target_id": 13,
"target_slot": 0,
"type": "INT"
},
{
"id": 34,
"origin_id": 22,
"origin_slot": 1,
"target_id": 13,
"target_slot": 1,
"type": "INT"
},
{
"id": 41,
"origin_id": 4,
"origin_slot": 0,
"target_id": 29,
"target_slot": 0,
"type": "CLIP"
},
{
"id": 42,
"origin_id": -10,
"origin_slot": 0,
"target_id": 29,
"target_slot": 2,
"type": "IMAGE"
},
{
"id": 43,
"origin_id": 5,
"origin_slot": 0,
"target_id": 29,
"target_slot": 1,
"type": "VAE"
},
{
"id": 44,
"origin_id": 29,
"origin_slot": 0,
"target_id": 8,
"target_slot": 1,
"type": "CONDITIONING"
},
{
"id": 45,
"origin_id": 21,
"origin_slot": 0,
"target_id": 29,
"target_slot": 3,
"type": "STRING"
}
],
"extra": {}
}
]
},
"config": {},
"extra": {
"ds": {
"scale": 0.9826982246641377,
"offset": [
1334.559732709442,
-453.34738550985094
]
},
"frontendVersion": "1.45.19"
},
"version": 0.4
}

[nova452]

The node has been updated entirely, check back again.

[Rocky-Balbowa]

The node has been updated entirely, check back again.

Thank you so so Mach for this incredible work , i Updated the Node and is now working Great. Round of applause for you for giving us this convenience. thx for the quick respose too. i am smiling now :-)

[a3nima]

I get black output with the latest version (cloned the repo) and latest comfyUI. No error, the image gets created halfways then turns black. Any suggestion where I could look for the problem / what I could change? (if I remove the input images for testing) it runs through without a black image it only takes way longer then the normal t2i workflow. so what exact models (diffusion model and text encoder) are you using ?

[nova452]

I get black output with the latest version (cloned the repo) and latest comfyUI. No error, the image gets created halfways then turns black. Any suggestion where I could look for the problem / what I could change? (if I remove the input images for testing) it runs through without a black image it only takes way longer then the normal t2i workflow. so what exact models (diffusion model and text encoder) are you using ?

Which image format are you adding as input? Try using the different size modes and pre downsizing to 512 if the error persists, I'm guessing it's something to do with the image format

[huangwujiulei]

Encountering the same situation,Blank Output

[a3nima]

the only warning in logs is: "[WARNING] unet unexpected: ['last.down.weight', 'last.up.weight']"
I've tried different inputs changed model, etc. but always after half of the generation process the image turns black I can watch it happen in the sampler window, it looks good in the beginning, like its going to work, then black:

EDIT: with a new comfyui installation it worked.

[timtima7]

Black picture output. 512 jpg images at the entrance do not help. Changing the model doesn't help either. ComfyUI 0.27.0

[a3nima]

I think I've found the culprit: Try running comfyui without fp16 accumulation, for me that was the reason.

[eeeugn]

I get the same black output with the Krea 2 Image Edit Rebalance node too, but it works normal with the Krea 2 Encode Rebalance node.

[Pathos14489]

I'm also having this issue without fp16 accumulation enabled. Latest ComfyUI and latest ComfyUI-Conditioning-Rebalance.

[hyperon2012rs-netizen]

I also get a black square output without fp16 accumulation on Comfyui 0.28.0 with RTX2060 Super GPU on Windows, using Krea2_turbo_Q4_0.gguf. But Krea 2 Encode Rebalance worked fine.