issues using with activeandroid

i was using activeandroid with backendless and this error pops up . any ideas?

02-21 14:31:39.647 19084-19084/com.mws.kimmie I/art: Rejecting re-init on previously-failed class java.lang.Class<com.backendless.writer.serialization.BlConfigurationItemDescriptionOptionsDeserializer>: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/fasterxml/jackson/databind/JsonDeserializer;
02-21 14:31:39.647 19084-19084/com.mws.kimmie I/art: at java.lang.Class java.lang.Class.classForName!(java.lang.String, boolean, java.lang.ClassLoader) (Class.java:-2)
02-21 14:31:39.647 19084-19084/com.mws.kimmie I/art: at java.lang.Class java.lang.Class.forName(java.lang.String, boolean, java.lang.ClassLoader) (Class.java:400)
02-21 14:31:39.647 19084-19084/com.mws.kimmie I/art: at void com.activeandroid.ModelInfo.scanForModelClasses(java.io.File, java.lang.String, java.lang.ClassLoader) (ModelInfo.java:187)
02-21 14:31:39.647 19084-19084/com.mws.kimmie I/art: at void com.activeandroid.ModelInfo.scanForModel(android.content.Context) (ModelInfo.java:152)
02-21 14:31:39.647 19084-19084/com.mws.kimmie I/art: at void com.activeandroid.ModelInfo.<init>(com.activeandroid.Configuration) (ModelInfo.java:63)
02-21 14:31:39.647 19084-19084/com.mws.kimmie I/art: at void com.activeandroid.Cache.initialize(com.activeandroid.Configuration) (Cache.java:66)
02-21 14:31:39.647 19084-19084/com.mws.kimmie I/art: at void com.activeandroid.ActiveAndroid.initialize(com.activeandroid.Configuration, boolean) (ActiveAndroid.java:44)
02-21 14:31:39.647 19084-19084/com.mws.kimmie I/art: at void com.activeandroid.ActiveAndroid.initialize(com.activeandroid.Configuration) (ActiveAndroid.java:34)

Hello,

we do not provide free support for integration with third-party sdk. please contact sales@backendless.com to get more information about paid support.

Laurent,

Sergey is correct that we do not provide support for 3rd party products. However, we will revisit this issue to see what can be done on our side to get rid of the class in question.

Regards,
Mark