java.util.regex.PatternSyntaxException: Unclosed character class near index 23 ([.*+?^$\{\}()|[\]\/\\]) ^

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via htmlunit by rschwab
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Unclosed character class near index 23 ([.*+?^$\{\}()|[\]\/\\]) ^
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Unclosed character class near index 23 ( ) ^
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java.util.regex.PatternSyntaxException: Unclosed character class near index 23 ([.*+?^$\{\}()|[\]\/\\]) ^
at java.util.regex.Pattern.error(Pattern.java:1713)
at java.util.regex.Pattern.clazz(Pattern.java:2254)

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