When creating an EventSource from a WebTarget with a URI containing a percent sign (f.i. a query parameter with a colon, which is URL encoded into "%3A"), an IllegalFormatConversionException is thrown ...
Exception in thread "main" java.lang.RuntimeException: java.util.FormatFlagsConversionMismatchException: Conversion = s, Flags = 0 at net.adoptopenjdk.bumblebench ...