Error while compiling the node files

[blockchaintrainer]

Hi,

I am getting error quite often and I tried all the solutions available in stackoverflow but it's still not working.

module.js:549
throw err;
^

Error: Cannot find module '/home/mugen/node_modules/example.js'
at Function.Module._resolveFilename (module.js:547:15)
at Function.Module._load (module.js:474:25)
at Function.Module.runMain (module.js:693:10)
at startup (bootstrap_node.js:188:16)
at bootstrap_node.js:609:3