At first sight this is not a bug in EasyEDA. It is a mistake in: 1. the net naming in the schematic and 2. a failure to check in the Design Manager before converting to PCB. Please see: https://easyeda.com/andyfierman/Welcome_to_EasyEDA-31e1288f882e49e582699b8eb7fe9b1f particularly section (4). The reason it is not a bug is because the net **does** exist in the schematic: ![enter image description here][1] * However, the question is how did the `3` net come to be named the way it is? The reason seems to be that there is a mistake in the Schematic Symbol that you have used for the trimpots R1 and R2. It is different from the symbol you have used for R13. The symbol for R13 is OK. The symbol for R1 and R2 is broken. Please replace the symbols for R1 and R2 with the same one that you have used for R13. * The symbol for R1 and R2 will be fixed or deleted from the library. [1]: /editor/20171026/59f1f5bdb999b.png

@andy - This is a good example where NET information for wires in a schematic would have been useful for debugging - see my feature request https://easyeda.com/forum/topic/Show_Net_Name_for_wires_in_schematics-fHBvM4mEy and please +1 it if you agree.

@andyfierman uh oh sorry for wrong topic section and thank you.

@FrankCA thank you!

@andyfierman You were right, Andy! Replacing R1 and R2 corrected the error! Many thanks!

@miguel-cafruni, Sorry but I cannot find the (broken) potentiometer symbol that you first used, in the library. * Can you post a link to or a screenshot of where you found it so that I can fix or remove it?

@andyfierman I do not found it again too :(

Maybe someone else in EasyEDA has already deleted it. :)