notarize macOS application on electron fail because- not signed- what should i sign?

Question

i am new in the macOS development its been difficult to me to understand how to notarize my electron js application in apple servers, i successfully made a script that send my build to apple servers but the application cant been notarized, i get this message in the logs: "Package build.zip has no signed executables or bundles. No tickets can be generated." i don't know that should i sign, because the "build" is a folder. can you help me to find the problem and tell me how to fix it? i have developer ID certificate but i don't know what to sign, or maybe the file I am sending to apple is not the file that i should send (i send the build folder)

thank you!