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null is not an object (evaluating RNAWSCognito.computeModPow)

See original GitHub issue

Describe the bug I hope this saves someone some time (and frustration)

A user can sign up or view the login page, but upon login, the following error is observed:

null is not an object (evaluating RNAWSCognito.computeModPow)

To Reproduce Create new >=RN0.60.0 project cd ios pod install build

Expected behavior Amplify podspec should correctly list RNAWSCognito.

Smartphone (please complete the following information):

Additional context remember not to use react-native link when working in >=0.60.0

Fix simply run the following in your project root

yarn add amazon-cognito-identity-js
cd ios
pod install

Issue Analytics

State:
Created 4 years ago
Reactions:21
Comments:38 (9 by maintainers)

Top GitHub Comments

5reactions

Jonathan0whcommented, Jul 7, 2020

This should be added to README documentation of aws-amplify, especially for the React Native part. I followed the normal README guide to install aws-amplify but also got this error before I googled it and went here. It should be emphasised that both aws-amplify and amazon-cognito-identity-js should be installed for React Native (at least for now as a workaround).

5reactions

kirkryancommented, Jul 22, 2019

I’ve just spotted that you mentioned it’s not in your pod file - that’s explains it. I had to manually add it:

#pod 'RNAWSCognito', :path => '../node_modules/amazon-cognito-identity-js'