java.lang.NullPointerException in EpubParser.isMimeTypeValid (EpubParser.java:62)

[hackstarsj]

private boolean isMimeTypeValid() throws EpubParserException {
    String mimeTypeData = container.rawData("mimetype");

    if (mimeTypeData.equals("application/epub+zip")) {
        return true;
    } else {
        System.out.println(TAG + "Invalid MIME type: " + mimeTypeData);
        throw new EpubParserException("Invalid MIME type");
    }
}

Please Fix the issue here null pointer exception on line 60

[hackstarsj]

Thanks