Problem with modify old PCB project

Hello colleagues ,
i try to modify a simple PCB project with two connectors on a plate . When i try to connect two pads of the pcb the line turn to green,but after double click it doesn’t make connection betwen pads. What can be the problem ?

Maybe you have made a pcb layout without a schematic and there are no nets in the design? What’s your router mode (Route → Interactive Router Settings)?

And what’s your KiCad version?

Yes ,
this is PSB without schematic. Kicad is version 6.0.1. Router mode is “Router highlight collisions” . When i try to connect two pads the second pad turn to green ,but after double click it disapear. It is the same with sone SMD element from the library .

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You can allow DRC violations in the router settings. That’s the simple way. But usually creating a schematic is recommended even for simple designs. I might go without a schematic with a design with a couple of connections, but you seem to have dozens.

You can also create nets directly in the pcb editor, Inspect → Net Inspector. After you have created a new net you can attach it to a pad in pad properties. But it would actually be easier to create a schematic and the normal workflow.

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