Checking the GlassFish server logs, a StackOverflow exception is thrown
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:161)
at org.apache.jasper.compiler.Parser.processIncludeDirective(Parser.java:394)
at org.apache.jasper.compiler.Parser.parse(Parser.java:185)
EDIT After returning to sanity: I included the page to the page itself, that caused StackOverflow.Exception in thread "http-bio-8080-exec-5" java.lang.StackOverflowError
at org.apache.jasper.compiler.Parser.parseFileDirectives(Parser.java:1777)
at org.apache.jasper.compiler.Parser.parse(Parser.java:135)
No problems in the question.