Found error when registered

[imfeemily]

I found this error with log below. When I've run on android5.0.

java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:300)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.VerifyError: Rejecting class javax.mail.internet.MimeMessage because it failed compile-time verification (declaration of 'javax.mail.internet.MimeMessage' appears in /data/data/kerry.express.th.mobile.kerrytracker/files/instant-run/dex/slice-slice_3-classes.dex)
at com.creativityapps.gmailbackgroundlibrary.util.GmailSender.sendMail(GmailSender.java:58)
at com.creativityapps.gmailbackgroundlibrary.BackgroundMail$SendEmailTask.doInBackground(BackgroundMail.java:272)
at com.creativityapps.gmailbackgroundlibrary.BackgroundMail$SendEmailTask.doInBackground(BackgroundMail.java:247)
at android.os.AsyncTask$2.call(AsyncTask.java:288)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)