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java.lang.IllegalArgumentException: Illegal group reference at java.util.regex.Matcher.appendReplacement(Matcher.java:554) at java.util.regex.Matcher.replaceAll(Matcher.java:646) at java.lang.String.replaceAll(String.java:1710) at lianolink.translation.data.website.PHPFileGenerator.restoreDefines(PHPFileGenerator.java:93)