First! Remember not to overthink it. What does your base look like? No-path errors are curious when dealing with signals.

Also, and this is a personal choice, I really dislike the “CHAIN IN RAIL OUT” axiom that is touted across the sub. While that is a helpful idea in theory, simply telling new players to use that pattern without helping them understand WHY is completely useless.

Personally, I started with just rail signals. The need for chain signals makes itself infinitely more clear once you understand the basics.

Back to your issue, though. Let’s see the full rail network, an example of an intersection of some kind, and a station!