NullPointerException

[hnvmeta]

I have meet crash when I open app again after pressing back button to exit app. Google Play Store rejected my app update because of this issue.
SDK version: ^6.15.1
java.lang.NullPointerException: Attempt to invoke virtual method 'void io.flutter.plugin.common.MethodChannel.invokeMethod(java.lang.String, java.lang.Object)' on a null object reference
E/AndroidRuntime( 4410): at com.appsflyer.appsflyersdk.AppsflyerSdkPlugin$5$2.run(AppsflyerSdkPlugin.java:402)

[github-actions]

👋 Hi @hnvmeta and Thank you for reaching out to us.
In order for us to provide optimal support, please submit a ticket to our support team at [email protected].
When submitting the ticket, please specify:

• ✅ your AppsFlyer sign-up (account) email
• ✅ app ID
• ✅ production steps
• ✅ logs
• ✅ code snippets
• ✅ and any additional relevant information.

[Dani-Koza-AF]

Fixed on v6.15.2 , please use this version 🙏