Explore: Fixes error when switching from prometheus to loki data sources (#18599)

Closes #18594 Closes #18596 (cherry picked from commit bf82e6cded)
2019-09-23 11:14:34 +03:00
parent 67bad726f1
commit dc6219d8e0
1 changed files with 1 additions and 1 deletions
@@ -115,7 +115,7 @@ export class QueryField extends React.PureComponent<QueryFieldProps, QueryFieldS
    if (initialQuery !== prevProps.initialQuery) {
      // and we have a version that differs
      if (initialQuery !== Plain.serialize(value)) {
-        this.setState({ value: makeValue(initialQuery, syntax) });
+        this.setState({ value: makeValue(initialQuery || '', syntax) });
      }
    }