ERROR:NgdBuild:604 - logical block 'XLXI_1' with type 'X74_283_MXILINX_mytop' could not be resolved. A pin name misspelling can cause this, a missing edif or ngc file, or the misspelling of a type name. Symbol 'X74_283_MXILINX_mytop' is not supported in target 'xa9500xl'