Cannot load http://localhost:3000/beacons in local environment

[zuohaisu]

Consider using 'dppx' units, as in CSS 'dpi' means dots-per-CSS-inch, not dots-per-physical-inch, so does not correspond to the actual 'dpi' of a screen. In media query expression: only screen and (-webkit-min-device-pixel-ratio: 1.5), only screen and (min-resolution: 144dpi)
Exception from Deps recompute function: Error: $in needs an array
at Error (native)
at Object.ELEMENT_OPERATORS.$in.compileElementSelector (http://localhost:3000/packages/minimongo.js?6aa0e153bfd7e4a28ee447a4cbfaf1fef0870a06:1851:15)
at http://localhost:3000/packages/minimongo.js?6aa0e153bfd7e4a28ee447a4cbfaf1fef0870a06:1533:19
at Function..each..forEach (http://localhost:3000/packages/underscore.js?0a80a8623e1b40b5df5a05582f288ddd586eaa18:164:22)
at operatorBranchedMatcher (http://localhost:3000/packages/minimongo.js?6aa0e153bfd7e4a28ee447a4cbfaf1fef0870a06:1513:5)
at compileValueSelector (http://localhost:3000/packages/minimongo.js?6aa0e153bfd7e4a28ee447a4cbfaf1fef0870a06:1425:12)
at http://localhost:3000/packages/minimongo.js?6aa0e153bfd7e4a28ee447a4cbfaf1fef0870a06:1404:9
at Function..each..forEach (http://localhost:3000/packages/underscore.js?0a80a8623e1b40b5df5a05582f288ddd586eaa18:164:22)
at compileDocumentSelector (http://localhost:3000/packages/minimongo.js?6aa0e153bfd7e4a28ee447a4cbfaf1fef0870a06:1387:5)
at _.extend._compileSelector (http://localhost:3000/packages/minimongo.js?6aa0e153bfd7e4a28ee447a4cbfaf1fef0870a06:1364:12) debug.js:41

[puiesabu]

try brew upgrade mongo

[zuohaisu]

upgraded to 2.6.0, still not working. has the same error.