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via Oracle Community by 843793, 1 year ago
via Google Groups by Matthew Jones, 2 years ago
invalid port range: :21
via Stack Overflow by user3115251
, 2 years ago
invalid host wildcard specification
java.lang.IllegalArgumentException: invalid port range: :21	at	at	at	at	at	at	at	at$1(	at$	at Method)	at	at java.lang.ClassLoader.loadClass(	at java.lang.ClassLoader.loadClass(	at DynamicExtension.main(