As everyone said it is happing because of untrusted server certificates.There are few more reason to get this exception, Changed in date & time in device. Slow internet connection.
Here what I see in your code is your using a thread pool executer to call an apis. make some delay of approx 1 or 2 sec in each,in order to minimise this error...hope it will help you. -- You received this message because you are subscribed to the Google Groups "Couchbase Mobile" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/mobile-couchbase/e816df1a-8054-49d4-bd7b-2c624c7365db%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
