causes vim to hang during startup

[ObiWahn]

"gulpfile.js" 17L, 361C
Error detected while processing function 112_compileLocalNodeData..112_extractModulesPaths..112_moduleMainFro
mPackageJson:
line 17:
E716: Key not present in Dictionary: name . '.js'))
E116: Invalid arguments for function filereadable(directory . json.name . '.js'))
E15: Invalid expression: (filereadable(directory . json.name . '.js'))

Please let me know if I can somehow help to debug this.