Your app is crashing. Here's the latest log:

16: 0xd85b08 v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
17: 0xd88f4c v8::internal::Heap::AllocateRawWithRetryOrFailSlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
18: 0xd4e71d v8::internal::Factory::AllocateRaw(int, v8::internal::AllocationType, v8::internal::AllocationAlignment) [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
19: 0xd485a4 v8::internal::FactoryBase<v8::internal::Factory>::AllocateRawWithImmortalMap(int, v8::internal::AllocationType, v8::internal::Map, v8::internal::AllocationAlignment) [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
20: 0xd49115 v8::internal::Handle<v8::internal::HeapNumber> v8::internal::FactoryBase<v8::internal::Factory>::NewHeapNumber<(v8::internal::AllocationType)0>() [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
21: 0xe68030 v8::internal::JsonParser<unsigned char>::ParseJsonNumber() [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
22: 0xe6d5c0 v8::internal::JsonParser<unsigned char>::ParseJsonValue() [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
23: 0xe6df0f v8::internal::JsonParser<unsigned char>::ParseJson() [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
24: 0xc66318  [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
25: 0xc668c6 v8::internal::Builtin_JsonParse(int, unsigned long*, v8::internal::Isolate*) [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
26: 0x1448ed9  [/home/ubuntu/.meteor/packages/meteor-tool/.2.7.3.1sch7fo.8349j++os.linux.x86_64+web.browser+web.browser.legacy+web.cordova/mt-os.linux.x86_64/dev_bundle/bin/node]
Exited from signal: SIGABRT
Your application is crashing. Waiting for file change.
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=> Meteor 3.0.4 is available. Check the changelog https://docs.meteor.com/changelog.html and update this project with 'meteor update'.
=> Meteor 3.0.4 is available. Check the changelog https://docs.meteor.com/changelog.html and update this project with 'meteor update'.
=> Meteor 3.0.4 is available. Check the changelog https://docs.meteor.com/changelog.html and update this project with 'meteor update'.
=> Meteor 3.0.4 is available. Check the changelog https://docs.meteor.com/changelog.html and update this project with 'meteor update'.
=> Meteor 3.0.4 is available. Check the changelog https://docs.meteor.com/changelog.html and update this project with 'meteor update'.
=> Meteor 3.0.4 is available. Check the changelog https://docs.meteor.com/changelog.html and update this project with 'meteor update'.
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