## The problem
Issue DevCycleHQ/js-sdks#1151 (closed, 7 comments): ## Description ## DevCycleProvider failed to initialize when used in **React Native Expo** with **expo-router** even if the correct sdkKey was given ## Error Message ## ```typescript [React]` { [UserError: Invalid SDK key provided. Please call initialize with a valid client SDK key] name: 'UserError', componentStack: '\n at DevCycleProvider (http://your...
## What fixed it
[leslie-lau (contributor)]: The DevCycle React Native SDK only accepts keys that start with client or dvc_client, so a Mobile SDK key will not work. Use your Client SDK key (dvc_client...), which the reporter confirmed fixed it.