Routing Error

I tried to do my pipe routing.I tried to put a gasket and flange in my nozzle and i get this error message
(Incompatible Connection types item Positioned with a 41N spool length from the previous component) i have tried severally no solutions can somebody please tell me what is the problem

Is you nozzle and the gasket the same spec?  Check your COCO table.

You should connect the branch head/tail to the nozzle and the gasket to the head/tail
You cannot connect a component directly to equipment.

Check if your flange and gasket share the same pressure rating.