missing socketed skill on cast on critical

Hello,

I am having an issue with Cast on Critical. I keep getting a "Warning: Missing Socketed Skill" message. I have tried inserting all possible spells one by one, but the error does not disappear.

The spells that normally work for all players, such as Lightning Bomb, Comet, Spell Cascade, Energy Retention, still trigger the "Missing Socketed Skill" error. Changing skills to Arc, Spark Ball, Lightning gives the same error. Restarting the game does not solve the problem either.

I have also tried:

Changing the weapon set

Unchecking and rechecking Cast on Critical for Weapon Set 1 and Weapon Set 2

The error persists, and I have no idea how to fix it.

Please help.