API error messages

2019-07-24T14:33:50Z

At /community/vmr/api/projectmanagement/project/data/listchildren/ I get an error that starts out as follows:
type Exception reportmessage Unable to compile class for JSP:description The server encountered an internal error that prevented it from fulfilling this request.exception

	org.apache.jasper.JasperException: Unable to compile class for JSP:

	An error occurred at line: 56 in the jsp file: /vmr/api/projectmanagement/project/data/listchildren/index.jsp
	history cannot be resolved to a variable
	53: return;
	54: }
	55:
	56: if (format == FORMAT_XML \|\| history) out.print("<keyChildren projectID=\""+pr.getProjectID()+"\" projectName=\""+pr.getProjectName()+"\" key=\""+key+"\" keyPath=\""+path+"\" count=\""+keys.size()+"\">");
	57: else if (format == FORMAT_JSON) response.setContentType("application/json");
	58: else if (format == FORMAT_TXT) response.setContentType("text/plain");
	59: JSONArray jsonResults = (format == FORMAT_JSON ? new JSONArray() : null);