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ee/app/assets/javascripts/ci_minutes_usage/components/minutes_usage_project_chart.vue

@@ -69,7 +69,7 @@ export default {
       return this.minutesUsageData.map((cur) => cur.month);
     },
     isDataEmpty() {
-      return this.minutesUsageData.length === 0 && this.selectedMonth.length === 0;
+      return this.minutesUsageData.length === 0 && !this.selectedMonth;
     },
   },
   watch: {

ee/spec/frontend/ci_minutes_usage/components/minutes_usage_month_chart_spec.js

@@ -37,7 +37,7 @@ describe('Minutes usage by month chart component', () => {
     expect(findAlert().exists()).toBe(false);
   });
 
-  it('renders an alert when no data is avaliable', () => {
+  it('renders an alert when no data is available', () => {
     createComponent({ minutesUsageData: [] });
 
     expect(findAlert().exists()).toBe(true);

ee/spec/frontend/ci_minutes_usage/components/minutes_usage_project_chart_spec.js

@@ -55,7 +55,7 @@ describe('Minutes usage by project chart component', () => {
   });
 
   describe('without CI minutes data', () => {
-    it('renders an alert when no data is avaliable', () => {
+    it('renders an alert when no data is available', () => {
       createComponent({ minutesUsageData: [] });
 
       expect(findAlert().exists()).toBe(true);