Problem with AnimateDiff extension "sd-forge-animatediff"

Error after installing AnimateDiff extension "sd-forge-animatediff", I have also tried "sd-webui-animatediff" which is ment for Automatic1111 but it results in the same error. What am I doing wrong?

*** Error loading script: animatediff.py
Traceback (most recent call last):
File "C:\ProgramAI\Forge\webui\modules\scripts.py", line 525, in load_scripts
script_module = script_loading.load_module(scriptfile.path)
File "C:\ProgramAI\Forge\webui\modules\script_loading.py", line 13, in load_module
module_spec.loader.exec_module(module)
File "", line 883, in exec_module
File "", line 241, in _call_with_frames_removed
File "C:\ProgramAI\Forge\webui\extensions\sd-webui-animatediff\scripts\animatediff.py", line 10, in
from scripts.animatediff_infv2v import AnimateDiffInfV2V
File "C:\ProgramAI\Forge\webui\extensions\sd-webui-animatediff\scripts\animatediff_infv2v.py", line 10, in
from scripts.animatediff_mm import mm_animatediff as motion_module
File "C:\ProgramAI\Forge\webui\extensions\sd-webui-animatediff\scripts\animatediff_mm.py", line 9, in
from motion_module import MotionWrapper, MotionModuleType
File "C:\ProgramAI\Forge\webui\extensions\sd-webui-animatediff\motion_module.py", line 10, in
from ldm.modules.attention import FeedForward
ModuleNotFoundError: No module named 'ldm'

Start by reproducing the extension-loading failure and inspect extensions/sd-webui-animatediff/scripts/animatediff.py, animatediff_infv2v.py, animatediff_mm.py, and motion_module.py. Check how these imports resolve in Forge, especially ldm.modules.attention, and compare the extension's compatibility with this repository. Done means establishing whether the extension is supported and identifying the required compatibility change or installation guidance.