Not an error (code 0): Could not open the database in read/write mode was thrown

I created a sqlite database using an android app and I stored it in my external disk. The database name is sensor.sqlite and the file path is

Environment.getExternalStorageDirectory()+ File.separator + "data" + File.separator +"sensor.sqlite"

However in this line of code

 this.getWritableDatabase();

An exception -> not an error (code 0): Could not open the database in read/write mode was thrown.

I have read related posts

getWritableDatabase() VS getReadableDatabase()

Open Database for ReadWirte not possible on specific device

But I haven't found an answer.

Do you have any idea? Thank you.

Regards, Jimmy