title: java.lang.NoSuchMethodError: org.apache.poi.util.POILogger.log(ILjava/lang/Object;Ljava/lang/Throwable;)V
body: <p>Hi Iam trying to convert xlsx to pdf using apache.poi at first time it's work perfectly until i add some code (convert docx to pdf) which need to use 3.17 version. After that when i try to convert xlsx i got this error </p>
  
  <blockquote>
    <p>java.lang.NoSuchMethodError: org.apache.poi.util.POILogger.log(ILjava/lang/Object;Ljava/lang/Throwable;)V</p>
  </blockquote>
  
  <p>I don't know what happen. Anyway here is my some code to get the file  </p>
  
  <pre><code>ByteArrayOutputStream baos = new ByteArrayOutputStream();
      OPCPackage pkg = OPCPackage.open(file);
      XSSFWorkbook xls = new XSSFWorkbook(pkg);
      XSSFSheet worksheet = xls.getSheetAt(0);
  </code></pre>
  
  <p>i got error when OPCPackage open file(InputStream). Please any one can help me?</p>
  
  <p>Lib : poi 3.17 and all dependencies, itextpdf 5.5.13</p>