browser: Avoid logging BucketNotEmpty error (#8110)

cmd/web-handlers.go

@@ -1972,6 +1972,8 @@ func toWebAPIError(ctx context.Context, err error) APIError {
 		return getAPIError(ErrStorageFull)
 	case BucketNotFound:
 		return getAPIError(ErrNoSuchBucket)
+	case BucketNotEmpty:
+		return getAPIError(ErrBucketNotEmpty)
 	case BucketExists:
 		return getAPIError(ErrBucketAlreadyOwnedByYou)
 	case BucketNameInvalid:

cmd/web-handlers_test.go

@@ -338,7 +338,7 @@ func testDeleteBucketWebHandler(obj ObjectLayer, instanceType string, t TestErrH
 		{"minio", false, "false token", "Authentication failed"},
 		{"minio", false, token, "The specified bucket is not valid"},
 		{bucketName, false, token, ""},
-		{bucketName, true, token, "Bucket not empty"},
+		{bucketName, true, token, "The bucket you tried to delete is not empty"},
 		{bucketName, false, "", "JWT token missing"},
 	}