java.io.UncheckedIOException: Unexpected
at ResponseBodyBeforeError$ReplyingServer.run(ResponseBodyBeforeError.java:379)
Caused by: javax.net.ssl.SSLException: Unsupported or unrecognized SSL message
at java.base/sun.security.ssl.SSLSocketInputRecord.handleUnknownRecord(SSLSocketInputRecord.java:450)
at java.base/sun.security.ssl.SSLSocketInputRecord.decode(SSLSocketInputRecord.java:175)
at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:111)
at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1510)
at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1425)
at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:455)
at java.base/sun.security.ssl.SSLSocketImpl.ensureNegotiated(SSLSocketImpl.java:925)
at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:1016)
at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:976)
at ResponseBodyBeforeError$ReplyingServer.readRequestMethod(ResponseBodyBeforeError.java:390)
at ResponseBodyBeforeError$ReplyingServer.run(ResponseBodyBeforeError.java:353)
STATUS:Failed.`main' threw exception: java.io.UncheckedIOException: Unexpected

Another type of failure that this fix should also fix:
java.lang.AssertionError
at ResponseBodyBeforeError$ReplyingServer.run(ResponseBodyBeforeError.java:360)
STATUS:Failed.`main' threw exception: java.lang.AssertionError