add log output if deletion of Analysis was unsuccessful

pkg/metrics/providers/keptn.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"k8s.io/klog/v2"
 	"strconv"
 	"strings"
 	"time"
@@ -153,14 +154,17 @@ func (k *KeptnProvider) queryKeptnAnalysis(obj *queryObject) (float64, error) {
 
 	// delete the created analysis at the end of the function
 	defer func() {
-		_ = k.client.
+		err := k.client.
 			Resource(obj.GroupVersionResource).
 			Namespace(obj.Namespace).
 			Delete(
 				context.TODO(),
 				createdAnalysis.GetName(),
 				v1.DeleteOptions{},
 			)
+		if err != nil {
+			klog.Error("Could not delete Keptn Analysis '%s': %v", createdAnalysis.GetName(), err)
+		}
 	}()
 
 	for {