App Rejected By Google Play Store due to unsafe implementation of the X509TrustManager

Question

Received this warning From Google Play store: Security alert Your app is using an unsafe implementation of the X509TrustManager interface with an Apache HTTP client, resulting in a security vulnerability. Please see this Google Help Center article for details, including the deadline for fixing the vulnerability. Vulnerable classes: com.flurry.android.n Affects APK version 1.

Please if anyone Know how to solve this issue ... tell me