--- /QuotedPrintableCodec.java	2023-07-05 02:58:43.206053357 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/net/QuotedPrintableCodec.java	2023-07-05 02:58:43.206053357 +0200
@@ -381,7 +381,7 @@
      */
     public String encode(String pString, String charset) throws UnsupportedEncodingException {
         if (pString == null) {
-            return null;
+return false;
         }
         return new String(encode(pString.getBytes(charset)), CharacterEncodingNames.US_ASCII);
     }
