If you are working with LTXV Clip model loader, it will look for clip models at some other location instead of the default one.
Solution,
- Update your ComfyUI using ComfyUI-Manager, Update All.
- Swap out the “LTXV Clip Model loader” with the default ComfyUI “Load Clip” node.
- Select the t5xxxl model and the ltxv type
See more details here,
https://www.reddit.com/r/comfyui/comments/1h8vddt/ltx_video_in_comfy_ltxvclipmodelloader_what_clip/