Need to update you Adapter as per new changes of FB sdk as it's throwing error.

[nilesh52]

Please update this adapter to latest version of Facebook Audience Network library. As your adapter is not supporting to present apps. Thanks for your library it is awesome !

[mohitfindoriya]

is it working for you in span grid view after updating facebook library..?

[nilesh52]

I have tried numbers of time to update facebook library but it didn't work.
very initial stage its throwing error.

[sudarshaana]

I am also facing this error.

[taar1]

I have the same problem. help!