{"action":"created","issue":{"url":"https://api.github.com/repos/artsy/eigen/issues/1993","repository_url":"https://api.github.com/repos/artsy/eigen","labels_url":"https://api.github.com/repos/artsy/eigen/issues/1993/labels{/name}","comments_url":"https://api.github.com/repos/artsy/eigen/issues/1993/comments","events_url":"https://api.github.com/repos/artsy/eigen/issues/1993/events","html_url":"https://github.com/artsy/eigen/issues/1993","id":186961357,"number":1993,"title":"Fix NSInvalidArgumentException in - [RCTUIManager registerRootView:withSizeFlexibility:], line 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Version: 3.0.1 (2016.10.29.02) | net.artsy.artsy ###\n\n\n### Stacktrace ###\n\n<pre>RCTUIManager;registerRootView:withSizeFlexibility:;RCTUIManager.m;384\nRCTRootContentView;initWithFrame:bridge:reactTag:sizeFlexiblity:;RCTRootView.m;342\nRCTRootView;bundleFinishedLoading:;RCTRootView.m;217\nRCTRootView;javaScriptDidLoad:;RCTRootView.m;207\nRCTBatchedBridge;executeSourceCode:;RCTBatchedBridge.m;549</pre>\n\n\n### Reason ###\n\n*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** setObjectForKey: key cannot be nil'\n\n\n### Link to HockeyApp ###\n\n* [https://rink.hockeyapp.net/manage/apps/37029/crash_reasons/143261426](https://rink.hockeyapp.net/manage/apps/37029/crash_reasons/143261426)\n\n"},"comment":{"url":"https://api.github.com/repos/artsy/eigen/issues/comments/259951330","html_url":"https://github.com/artsy/eigen/issues/1993#issuecomment-259951330","issue_url":"https://api.github.com/repos/artsy/eigen/issues/1993","id":259951330,"user":{"login":"sarahscott","id":2712962,"avatar_url":"https://avatars.githubusercontent.com/u/2712962?v=3","gravatar_id":"","url":"https://api.github.com/users/sarahscott","html_url":"https://github.com/sarahscott","followers_url":"https://api.github.com/users/sarahscott/followers","following_url":"https://api.github.com/users/sarahscott/following{/other_user}","gists_url":"https://api.github.com/users/sarahscott/gists{/gist_id}","starred_url":"https://api.github.com/users/sarahscott/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sarahscott/subscriptions","organizations_url":"https://api.github.com/users/sarahscott/orgs","repos_url":"https://api.github.com/users/sarahscott/repos","events_url":"https://api.github.com/users/sarahscott/events{/privacy}","received_events_url":"https://api.github.com/users/sarahscott/received_events","type":"User","site_admin":false},"created_at":"2016-11-11T12:54:01Z","updated_at":"2016-11-11T12:54:01Z","body":"We have determined that the likely cause is [this line](https://github.com/facebook/react-native/blob/v0.35.0/React/Base/RCTRootView.m#L188), where `uiManager` is possibly `nil` and thus sending `allocateRootTag` to it returns `nil` as well. There is a [guard](https://github.com/facebook/react-native/blob/v0.35.0/React/Base/RCTRootView.m#L212) for the `bridge`'s validity earlier in the code so I am thinking the `uiManager` becomes released or lost at some point. \r\n\r\n"}}
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