Hi @abakashtwit,
Thanks for reaching out!
The following log shows that the FAN adapters are missing, renamed or in the wrong place:
com.mopub.simpleadsdemo W: Failed to load Custom Event Native class: com.mopub.nativeads.FacebookNative
You’ll want to make sure you have the FAN adapters included in the com.mopub.nativeads folder of your project. You’ll also need to make sure you’ve integrated the FAN SDK into your project.
Feel free to check out our Integrating Native Third Party Ad Networks documentation for more information.
Thanks!