error to run server.js in web socket project

[jxr041100]

sh-4.4# node server.js node:internal/modules/cjs/loader:936 throw err; ^

Error: Cannot find module '/server.js' at Function.Module._resolveFilename (node:internal/modules/cjs/loader:933:15) at Function.Module._load (node:internal/modules/cjs/loader:778:27) at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:79:12) at node:internal/main/run_main_module:17:47 { code: 'MODULE_NOT_FOUND', requireStack: [] }