- Sqlite now handles concurrency with transactions

src/Common/PdoObject.php

@@ -56,7 +56,7 @@ class PdoObject extends PDO {
             }
         }
         catch (\Throwable $e) {
-            throw new \PdoException($e->getMessage() . " `$sql` with data:" . json_encode($parameters));
+            throw new \PdoException($e->getMessage() . " `$sql` with data:" . json_encode($parameters), (int) $e->getCode(), $e);
         }
         
         return null;
@@ -83,7 +83,7 @@ class PdoObject extends PDO {
         $this->lastInsertId = null;
 
         try {
-            if ( ! $this->inTransaction() ) {
+            if (! $this->inTransaction()) {
                 $this->beginTransaction();
             }
 
@@ -113,8 +113,6 @@ class PdoObject extends PDO {
         catch (\Throwable $e) {
             throw $e;
         }
-
-        return null;
     }
 
     protected function bindVariables(PDOStatement $statement, array &$parameters) : void