Mortar Cannon Not Enough Spirit???

Hi,

I logged in today to play my Chronomancer with the Mortar Cannon skill, but something seems off. I can’t use the Mortar Cannon because I keep getting the error message: “Not enough Spirit.”

I’ve already deactivated all gems that require Spirit, and I currently have 143 Spirit available, but the issue persists.

Could you please check what might be causing this?

Thanks,