Check for null plot wrapper on plot resize (#5960)

* check for null plot wrapper first

* make code clearer with short circuit up front

1 files changed, 7 insertions, 3 deletions

diff --git a/src/plugins/plot/MctPlot.vue b/src/plugins/plot/MctPlot.vue
index 125ab557e..96a9f2592 100644
--- a/src/plugins/plot/MctPlot.vue
+++ b/src/plugins/plot/MctPlot.vue
@@ -1192,11 +1192,15 @@ export default {
             this.$emit('statusUpdated', status);
         },
         handleWindowResize() {
-            const newOffsetWidth = this.$parent.$refs.plotWrapper.offsetWidth;
+            const { plotWrapper } = this.$parent.$refs;
+            if (!plotWrapper) {
+                return;
+            }
+
+            const newOffsetWidth = plotWrapper.offsetWidth;
             //we ignore when width gets smaller
             const offsetChange = newOffsetWidth - this.offsetWidth;
-            if (this.$parent.$refs.plotWrapper
-                && offsetChange > OFFSET_THRESHOLD) {
+            if (offsetChange > OFFSET_THRESHOLD) {
                 this.offsetWidth = newOffsetWidth;
                 this.config.series.models.forEach(this.loadSeriesData, this);
             }