Error .. ?

[Dave181295]

Caused by: java.lang.VerifyError: Verifier rejected class com.sun.mail.handlers.handler_base: java.awt.datatransfer.DataFlavor[] com.sun.mail.handlers.handler_base.getTransferDataFlavors() failed to verify: java.awt.datatransfer.DataFlavor[] com.sun.mail.handlers.handler_base.getTransferDataFlavors(): [0x4] can't resolve returned type 'Unresolved Reference: java.awt.datatransfer.DataFlavor[]' or 'Reference: javax.activation.ActivationDataFlavor[]' (declaration of 'com.sun.mail.handlers.handler_base' appears in /data/app/~~S0HvbDJX5giSHLdUgffFsA==/com.sushiadminxl.sushiadminxl-V4WLNM-HyzyIT1cZzFf5uQ==/base.apk!classes3.dex) at java.lang.Class.newInstance(Native Method)  at javax.activation.MailcapCommandMap.getDataContentHandler(MailcapCommandMap.java:600)  at javax.activation.MailcapCommandMap.createDataContentHandler(MailcapCommandMap.java:554)  at javax.activation.DataHandler.getDataContentHandler(DataHandler.java:627)  at javax.activation.DataHandler.writeTo(DataHandler.java:329)  at javax.mail.internet.MimeUtility.getEncoding(MimeUtility.java:324)  at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1532)  at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2198)  at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:2159)  at javax.mail.Transport.send(Transport.java:123)  at com.creativityapps.gmailbackgroundlibrary.util.GmailSender.sendMail(GmailSender.java:114)  at com.creativityapps.gmailbackgroundlibrary.BackgroundMail$SendEmailTask.doInBackground(BackgroundMail.java:273)  at com.creativityapps.gmailbackgroundlibrary.BackgroundMail$SendEmailTask.doInBackground(BackgroundMail.java:248)  at android.os.AsyncTask$3.call(AsyncTask.java:394)  at java.util.concurrent.FutureTask.run(FutureTask.java:266)  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:305)  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)  at java.lang.Thread.run(Thread.java:923)