fix(http): fix template not found error

document.go

@@ -4,6 +4,9 @@ import (
 	"context"
 )
 
+// ErrDocumentNotFound is the error msg for a missing document.
+const ErrDocumentNotFound = "document not found"
+
 // DocumentService is used to create/find instances of document stores.
 type DocumentService interface {
 	CreateDocumentStore(ctx context.Context, name string) (DocumentStore, error)

kv/document.go

@@ -581,6 +581,13 @@ func (s *DocumentStore) FindDocuments(ctx context.Context, opts ...influxdb.Docu
 		return nil
 	})
 
+	if IsNotFound(err) {
+		return nil, &influxdb.Error{
+			Code: influxdb.ENotFound,
+			Msg:  influxdb.ErrDocumentNotFound,
+		}
+	}
+
 	if err != nil {
 		return nil, err
 	}