Quick answer
The Error Pattern Checker finds log lines that match a pattern (plain text or regular expression).
Error Pattern Empty
The Error Pattern Checker finds log lines that match a pattern (plain text or regular expression). If the pattern field is empty, the tool reports an error and does not run the search.
Common causes
- Leaving the pattern input blank.
- Clearing the pattern by mistake before clicking Check.
How to fix
- Enter a pattern: a word (e.g. ERROR), phrase, or regular expression.
- Use Regex option for regex patterns (e.g. \berror\b for word boundary).
- Use Case sensitive when you need exact case match.
Examples
Bad
Good
ERROR
FAQ
- Can I search for multiple patterns?
- Use a single regex with alternation, e.g. ERROR|WARN|FATAL, and enable Regex.
- What is the max content size?
- Content is limited to 50,000 characters. Pattern is limited to 2,000 characters.
Fix it now
Try in validator (prefill this example)