getting error

gooddayclass_be_auth@1.0.1 start /home/node/app

node -r dotenv/config build/server.js

internal/modules/cjs/loader.js:965
throw err;
^

Error: Cannot find module '/home/node/app/build/server.js'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:962:15)
at Function.Module._load (internal/modules/cjs/loader.js:838:27)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
at internal/main/run_main_module.js:17:47 {
code: 'MODULE_NOT_FOUND',
requireStack: []
}