Logging enabled along with Show applet lifecycle exceptions.
C:\Users\<UserAccount>\AppData\LocalLow\Sun\Java\Deployment\log
The only exception message I see here is
<record>
<date>2018-06-13T06:15:43</date>
<millis>1528884943925</millis>
<sequence>57</sequence>
<logger>com.sun.deploy</logger>
<level>FINE</level>
<class>com.sun.deploy.trace.LoggerTraceListener</class>
<method>print</method>
<thread>9</thread>
<message>java.lang.IllegalArgumentException: Comparison method violates its general contract!
</message>
</record>