Native module cannot be null.

[jackien1]

While using react native with expo and the background timer, my phone displayed "Native module cannot be null". What does this mean and how can I fix it?

[leonardocarvalho]

Have you run react-native link react-native-background-timer?

[aldente05]

+1

i already do react-native link react-native-background-timer

"react-native-background-timer": "^1.2.0"
react-native-cli: 2.0.1
npm : 5.3.0
xcode : 8

[NonkelDaniel]

I am having the same issue, has anybody found a solution to this problem? I too have already ran the react-native link command.

[shanakaf]

Did you build the project (react-native run-ios) after installing the project? That solved the issue for me.

[googlecomvn]

Thanks shanakaf. You saved me time.

[j-mendez]

you need to manually link it. One of the files does not properly include the lib so you need to go into the node modules to link it for iOS.

[natterstefan]

@aldente05 @NonkelDaniel this should help, as it did for me: #35 (comment)

[relu-xz]

@ElN1n0 I have the same issue and sadly this module won't work with Expo, you have to detach it

[ocetnik]

Duplicates #70 #72