cylindrical rod bending analysis

hi,

i tried to make a bending analysis to cylindrical linear rail with brass block.

i made simple assembly (only 2 parts)

the rod is 12mm diameter, 300mm length, material chrome steel.

the block is 40x40x40mm brass with hole thru the middle 12.1mm diameter.

i put a fixture on about and of the rod, and apply 1N force on the top face of the block.

the mash work fine.

but i get an error in the solving process.

SolidworksSimulation