Fixing typo

web/react/components/error_bar.jsx

@@ -9,11 +9,11 @@ export default class ErrorBar extends React.Component {
 
         this.onErrorChange = this.onErrorChange.bind(this);
         this.handleClose = this.handleClose.bind(this);
-        this.prevTimmer = null;
+        this.prevTimer = null;
 
         this.state = ErrorStore.getLastError();
         if (this.state && this.state.message) {
-            this.prevTimmer = setTimeout(this.handleClose, 10000);
+            this.prevTimer = setTimeout(this.handleClose, 10000);
         }
     }
 
@@ -34,14 +34,14 @@ export default class ErrorBar extends React.Component {
     onErrorChange() {
         var newState = ErrorStore.getLastError();
 
-        if (this.prevTimmer != null) {
-            clearInterval(this.prevTimmer);
-            this.prevTimmer = null;
+        if (this.prevTimer != null) {
+            clearInterval(this.prevTimer);
+            this.prevTimer = null;
         }
 
         if (newState) {
             this.setState(newState);
-            this.prevTimmer = setTimeout(this.handleClose, 10000);
+            this.prevTimer = setTimeout(this.handleClose, 10000);
         } else {
             this.setState({message: null});
         }