- Added caching mechanism as an event listener

src/Common/PdoObject.php

@@ -49,7 +49,12 @@ class PdoObject extends PDO {
             if (false !== ( $statement = $this->prepare($sql) )) {
                 return $this->execute($statement, $parameters, true);
             }
-        } 
+        }
+        catch(\PDOException $pdo) {
+            if ( substr($pdo->getMessage(), 0, 30) !== 'There is no active transaction' ) {
+                throw $pdo;
+            }
+        }
         catch (\Throwable $e) {
             throw new \PdoException($e->getMessage() . " `$sql` with data:" . json_encode($parameters));
         }