src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/MacCertificate.java

*** 110,120 ****
              output = output.substring(output.indexOf("=") + 1);
              DateFormat df = new SimpleDateFormat(
                      "MMM dd kk:mm:ss yyyy z", Locale.ENGLISH);
              result = df.parse(output);
          } catch (IOException | ParseException ex) {
!             Log.debug(ex);
          }
  
          return result;
      }
  
--- 110,120 ----
              output = output.substring(output.indexOf("=") + 1);
              DateFormat df = new SimpleDateFormat(
                      "MMM dd kk:mm:ss yyyy z", Locale.ENGLISH);
              result = df.parse(output);
          } catch (IOException | ParseException ex) {
!             Log.verbose(ex);
          }
  
          return result;
      }