fix: slice bounds out of range on failure location printer (#777)

* fix: slice bounds out of range on failure location printer

* fix: add slice after

pkg/printer/printer.go

@@ -210,8 +210,10 @@ func (p *Printer) GetWarningsText(warnings []Warning) string {
 				for _, occurrenceDetails := range failedRule.OccurrencesDetails {
 					sb.WriteString(fmt.Sprintf("    - metadata.name: %v (kind: %v)\n", p.getStringOrNotAvailableText(occurrenceDetails.MetadataName), p.getStringOrNotAvailableText(occurrenceDetails.Kind)))
 					for _, validationResult := range occurrenceDetails.FailureLocations {
-						failurePath := fmt.Sprintf("%v (line: %d:%d)\n", strings.Replace(validationResult.SchemaPath, "/", ".", -1)[1:], validationResult.FailedErrorLine, validationResult.FailedErrorColumn)
-						sb.WriteString(fmt.Sprintf("      > key: %v", failurePath))
+						if validationResult.SchemaPath != "" {
+							failurePath := fmt.Sprintf("%v (line: %d:%d)\n", strings.Replace(validationResult.SchemaPath, "/", ".", -1)[1:], validationResult.FailedErrorLine, validationResult.FailedErrorColumn)
+							sb.WriteString(fmt.Sprintf("      > key: %v", failurePath))
+						}
 					}
 					sb.WriteString("\n")