Check Your Anchor Points
Ensure both anchor points are solid blocks or valid structures. The mod needs two distinct, stable surfaces to hang lights between. Fences, walls, poles, and full blocks all work well. If lights won't place, try clicking on different block faces or repositioning your anchor points further apart.
Verify Your Crafting
Confirm you've used the correct ingredients in the right quantities. Open the crafting interface and check that your string, dyes, and light sources are properly combined. If the recipe doesn't match the pattern shown, the craft won't work.
Test in Creative Mode
Switch to creative mode to test if the issue is with your setup or your resources. If lights work fine in creative, you may need to gather more materials or adjust your anchor points in survival. Check that you have enough inventory space for the crafted item before attempting to craft.