Leak point in plant 3D copy paste

[kandarp]

I want to copy the small branch connection to the header. While using copy paste command, I found leak point between pipe and Olet connection. Screenshot is attached for reference. Can anyone guide me to solve this problem please?

[Venkatesan.A]

Did you make sure your Object Snap was on while placing it on the new line?

[dave.wolfe]

Select the olet, right click, choose connect to adjacent.

[kandarp]

I have tried to attach to adjacent component but it gives error "the port must be adjacent inorder to connect"