MisunderstoodCommandException: Error running AT E0, response: ?

[AshishgithubindiA]

Caused by: com.github.pires.obd.exceptions.MisunderstoodCommandException: Error running AT E0, response: ?
at java.lang.Class.newInstance(Native Method)
at com.github.pires.obd.commands.ObdCommand.checkForErrors(ObdCommand.java:220)
at com.github.pires.obd.commands.ObdCommand.readResult(ObdCommand.java:140)
at com.github.pires.obd.commands.ObdCommand.run(ObdCommand.java:88)
at com.rohan.darshan.autoginie_obd2.MainActivity.nextStep(MainActivity.java:179)
at com.rohan.darshan.autoginie_obd2.MainActivity$Task.doInBackground(MainActivity.java:216)
at com.rohan.darshan.autoginie_obd2.MainActivity$Task.doInBackground(MainActivity.java:210)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)