Merge pull request #1995 from mattermost/PLT-1586b

Fixing small issue with displaying activity log

web/react/components/error_bar.jsx

@@ -87,6 +87,7 @@ export default class ErrorBar extends React.Component {
             e.preventDefault();
         }
 
+        ErrorStore.clearLastError();
         this.setState({message: null});
     }