controlnet not loading in UI

Nobody has claimed this yet.

have done everything including the URL https://github.com/Mikubill/sd-webui-controlnet, everything is there in my SD including showing up in my settings, but no dropdown in txt2img or img2img, any ideas ???.....

Error loading script: controlnet.py
Traceback (most recent call last):
File "C:\ai\stable-diffusion-webui\modules\scripts.py", line 164, in load_scripts
module = script_loading.load_module(scriptfile.path)
File "C:\ai\stable-diffusion-webui\modules\script_loading.py", line 13, in load_module
exec(compiled, module.__dict__)
File "C:\ai\stable-diffusion-webui\extensions\sd-webui-controlnet\scripts\controlnet.py", line 764, in
script_callbacks.on_after_component(img2img_tab_tracker.on_after_component_callback)
AttributeError: module 'modules.script_callbacks' has no attribute 'on_after_component'

Error loading script: xyz_grid_support.py
Traceback (most recent call last):
File "C:\ai\stable-diffusion-webui\modules\scripts.py", line 164, in load_scripts
module = script_loading.load_module(scriptfile.path)
File "C:\ai\stable-diffusion-webui\modules\script_loading.py", line 13, in load_module
exec(compiled, module.__dict__)
File "C:\ai\stable-diffusion-webui\extensions\sd-webui-controlnet\scripts\xyz_grid_support.py", line 2, in
from scripts import controlnet
File "C:\ai\stable-diffusion-webui\extensions\sd-webui-controlnet\scripts\controlnet.py", line 764, in
script_callbacks.on_after_component(img2img_tab_tracker.on_after_component_callback)
AttributeError: module 'modules.script_callbacks' has no attribute 'on_after_component'

Start with the traceback locations in extensions/sd-webui-controlnet/scripts/controlnet.py and xyz_grid_support.py, then inspect the referenced modules.script_callbacks API in the Stable Diffusion WebUI code. Reproduce the extension-loading errors and verify the fix by confirming that ControlNet loads without errors and the dropdown appears in txt2img and img2img.

Written by the indexing model from the issue text.