Add missing toast error message for Step 1

_locales/en/messages.json

@@ -1740,6 +1740,9 @@
 	"hub_create_account_toast_error": {
 		"message": "That email address is already in use. Please choose another."
 	},
+	"ghostery_browser_hub_onboarding_toast_fix_errors": {
+		"message": "Please fix errors before proceeding."
+	},
 	"ghostery_browser_hub_onboarding_install_heading": {
 		"message": "Ghostery Dawn now installing..."
 	},

app/ghostery-browser-hub/Views/OnboardingViews/Step1_CreateAccountForm/Step1_CreateAccountFormContainer.jsx

@@ -152,10 +152,15 @@ class CreateAccountFormContainer extends Component {
 			validateInput: true,
 		});
 
+		const { actions } = this.props;
 		if (!emailIsValid || !confirmIsValid || !legalConsentChecked || !passwordIsValid || confirmPasswordError) {
+			actions.setToast({
+				toastMessage: t('ghostery_browser_hub_onboarding_toast_fix_errors'),
+				toastClass: 'alert'
+			});
 			return;
 		}
-		const { actions } = this.props;
+
 		actions.setToast({
 			toastMessage: '',
 			toastClass: ''