Javarevisited: java.lang.numberformatexception for input string null - Cause and Solution
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Clicking Search for Issue under Issues menu result in ERROR [500ErrorPage.jsp] Exception caught in 500 page For input string: "" | Jira | Atlassian Documentation
Exception in thread "main" java.lang.NumberFormatException: For input string: "" in Java - Stack Overflow
Input string was not in a correct format.Couldn't store string in Column. Expected type is Int32