javascript - TypeError while trying to connect to mongoDB using meteor.js -

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i have new meteor project, every time execute meteor mongo following:

c:\users\edtho\appdata\local\.meteor\packages\meteor-tool\1.4.1\mt-os.windows.x86_32\dev_bundle\lib\node_modules\meteor-promise\promise_server.js:165     throw error;                                                                                                                                        ^                                                                                                                                                  typeerror: port should number or string: null                                                                                                          @ lookupandconnect (net.js:942:13)                                                                                                                     @ socket.connect (net.js:921:5)                                                                                                                        @ object.exports.connect.exports.createconnection (net.js:69:35)                                                                                       @ c:\tools\runners\run-mongo.js:280:24                                                                                                                 @ findmongoport (c:\tools\runners\run-mongo.js:279:12)                                                                                                 @ command.func (c:\tools\cli\commands.js:1132:21)                                                                                                      @ c:\tools\cli\main.js:1410:23

i want clarify app wasn't starting, stuck @ starting app, found solution that: set mongo_url=mongodb://127.0.0.1:27017/sample have hunch might what's conflicting?


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