There is a crafting bug where you have the listed  ingredients and credits, select craft, and the animation/sound indicates the crafting is complete, but no item.  Can't complete any other crafting action until the command deck is reloaded.  For me its happening on relic items only.  I want to say a few years ago this was a thing and it was caused by the incorrect requirements being listed and you not having the "required" credits /parts.