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java.util.regex.PatternSyntaxException: Illegal repetition
{userName}	at java.util.regex.Pattern.error(Unknown Source)	at java.util.regex.Pattern.closure(Unknown Source)	at java.util.regex.Pattern.sequence(Unknown Source)	at java.util.regex.Pattern.expr(Unknown Source)	at java.util.regex.Pattern.compile(Unknown Source)	at java.util.regex.Pattern.(Unknown Source)	at java.util.regex.Pattern.compile(Unknown Source)	at java.lang.String.replaceAll(Unknown Source)