autodesk maya: problem with cylinder

[xRoyal]

hi guys I'm making a cylinder that would be the barrel of a gun but look at what error gives me while I want to make it less spigoloso.
How can I solve this? Thank you.

 

[Tristan]

you have wrong forum. This where you posted is related to 3d modeling with autocad; from the pictures it is evident that you are using maya.

 

[xRoyal]

ah excuse me, I ask moderators if you can move the post thanks