TypeError: Cannot read property 'setLibraryName' of null, js engine: hermes

[borijuyeong]

I am junior developer using amplitude react-native. Ios works fine but when I try to build android, it shows this error.

Can anyone give me some help?

[yuhao900914]

Hi @borijuyeong, which amplitude react-native versions are you using? And what's the version of your react-native?

[dongjinBaek]

I'm having similar issue, too. It happens when I call Amplitude.getInstance();

Version

• @amplitude/react-native: 2.5.0
• react-native: 0.63.4

Screenshot

[zeeberry]

Running into the same issue!

Version

@amplitude/react-native: 2.5.0 react-native: 0.63.4

[cesarribeirobdevima]

Any of you solved this?

[zeeberry]

nope, not yet

[khanisak]

Run into same error today after installing RN amplitude package. Re-install my app using react-native run-android after npm install @amplitude/react-native@latest solved the issue for me.

[gyl89]

Same issue with version 2.7.0.

Any workaround?

[vasylnahuliak]

"react-native": "0.65.1",
"@amplitude/react-native": "2.7.0",

Android and iOS — no issue (both Hermes)

@borijuyeong could you provide a piece of code where you use Amplitude?

[yuhao900914]

I use Hermes by following this docs.

I tried with react-native 0.63.4 & 0.66.1 with "@amplitude/react-native": "2.3.2", "@amplitude/react-native": "2.5.0". However I'm not able to reproduce this issue.

Could you provide an example app in order to reproduce this issue?

[vasylnahuliak]

@borijuyeong I get this error if I forgot to install pods after installing @amplitude/react-native package. Also after that need npm run ios for building ios dependencies.

FYI: For installing pods needs in terminal run bundle exec pod install in ios folder

[minaairsupport]

the same issue is it fixed

[yuhao900914]

Hi @minaairsupport, did you install the pods in ios folder?

[minaairsupport]

I am using Expo, should I install the pods ?

[Lucilamrossi]

Any solution? Im also using Expo and couldn't make it work

[yuhao900914]

This amplitude-ReactNative doesn't support EXPO. However, we have a new ReactNative SDK. It supports React Native Web, Reacts Native Android, React Native iOS, and compatibility with Expo. It also supports custom plugins and has built-in type definitions. Please check here. https://github.com/amplitude/Amplitude-ReactNative/issues/138 I will provide a document for migration soon. Thanks.