SAMPreprocessor: No module named 'timm'

Error occurred when executing SAMPreprocessor:

No module named 'timm'

File "/content/drive/MyDrive/ComfyUI/execution.py", line 151, in recursive_execute
output_data, output_ui = get_output_data(obj, input_data_all)
File "/content/drive/MyDrive/ComfyUI/execution.py", line 81, in get_output_data
return_values = map_node_over_list(obj, input_data_all, obj.FUNCTION, allow_interrupt=True)
File "/content/drive/MyDrive/ComfyUI/execution.py", line 74, in map_node_over_list
results.append(getattr(obj, func)(**slice_dict(input_data_all, i)))
File "/content/drive/MyDrive/ComfyUI/custom_nodes/comfyui_controlnet_aux/node_wrappers/segment_anything.py", line 17, in execute
from controlnet_aux.segment_anything import SamDetector
File "/content/drive/MyDrive/ComfyUI/custom_nodes/comfyui_controlnet_aux/src/controlnet_aux/segment_anything/__init__.py", line 18, in
from .automatic_mask_generator import SamAutomaticMaskGenerator
File "/content/drive/MyDrive/ComfyUI/custom_nodes/comfyui_controlnet_aux/src/controlnet_aux/segment_anything/automatic_mask_generator.py", line 13, in
from .modeling import Sam
File "/content/drive/MyDrive/ComfyUI/custom_nodes/comfyui_controlnet_aux/src/controlnet_aux/segment_anything/modeling/__init__.py", line 7, in
from .sam import Sam
File "/content/drive/MyDrive/ComfyUI/custom_nodes/comfyui_controlnet_aux/src/controlnet_aux/segment_anything/modeling/sam.py", line 13, in
from .tiny_vit_sam import TinyViT
File "/content/drive/MyDrive/ComfyUI/custom_nodes/comfyui_controlnet_aux/src/controlnet_aux/segment_anything/modeling/tiny_vit_sam.py", line 15, in
from timm.models.layers import DropPath as TimmDropPath,\