I've run into a bug involving the electrum knife and the forge:tools/knives tag. This occurred using the 1.18.2 forge latest release as of submitting this report. Discovered while attempting to use Farmer's Delight knives. The screenshot shows Farmer's Delight's tags are filled just fine. The instance's log outputted this error:
Couldn't load tag forge:tools/knives as it is missing following references: oreganized:electrum_knife

Should be fixed in 1.0.4 now that compatibility with Farmer's Delight is completely fixed