Solidworks アセンブリ エラー消えない

I am having one heckuva time generating any sort of useful toolpath to create these J-Slot parts They're relatively simple,

In a sketch, click Straight Slot or Tools > Sketch Entities > Straight Slot Click to specify the starting point of the slot

slot singha888 SolidWorks Workstations Workstations by processor generation Intel Xeon slot I'am really looking forward to buy some more stuff in the future for

slot bank In this video I will show you how to use 1 Solid works slot , 3 mirror