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[Android] undefined is not an object (evaluating '_NativeModules$Realm.debugHosts')

See original GitHub issue

Goals

Simply trying to launch the app. After installing Realm Database it has worked and I could successfully write data to it. Since then, it just doesn’t launch anymore. Tried to rebuild, clear caches, and really, tried everything I know of. Followed all steps from the docs and troubleshooting, and tried many solutions from the other related issues (#1150, #527, #762), but nothing seems to work.

Expected Results

Launch the app normally (not using Realm on startup or anything like that, it only gets called upon touching a button).

Actual Results

Above image is from an emulator.

Also tried to get a stacktrace from the Android Device Monitor, however, I am being unsuccessful.

Steps to Reproduce

Install Realm normally, check all changes from react-native link are OK, write some data, and restart the app.

Version of Realm and Tooling

Realm JS SDK Version: 2.25.0
React Native: 0.57.4
Which debugger for React Native: None

Issue Analytics

State:
Created 5 years ago
Comments:6 (1 by maintainers)

Top GitHub Comments

1reaction

matheusgriegercommented, Aug 19, 2019

We gave up on React Native and went back to hybrid solutions using Cordova. RN was running too slow for our project…

0reactions

borysstachcommented, Oct 2, 2019

I have very similar issue on upgrade from 1.13.0 to 2.29.2 “null is not an object (evaluating ‘_NativeModules$Realm.debugHosts’)” only without debugger Fixed it by removing this check: https://github.com/borysstach/realm-js/commit/5518dd3c700d90cf9c1b2deadfdcc29425c9d814