Topic related to create signed apk

A problem occurred evaluating script.

Calling [node, C:\Users\Dell\Desktop\Inkstall App\Rocket.Chat.ReactNative-develop\node_modules\react-native\node_modules\@react-native-community\cli\build\bin.js, config] finished with an exception. Error message: groovy.json.JsonException: Unable to determine the current character, it is not a string, number, array, or object

CAn you explain what the issue is?