Cause: Outdated WebView or incompatible libraries. Fix:
A: Facebook forces API updates. If your APK is too old (pre-2020), the servers will reject it. You need to find the newest APK that still supports API 22. facebook para android 5.1 9 apk
A: Avoid modded versions. They are dangerous. Use official Facebook Lite with an ad-blocking DNS like AdGuard DNS instead. Cause: Outdated WebView or incompatible libraries