fix(migration): tries to set default value of null for created_at

migrations/Version20250831013403.php

@@ -21,10 +21,7 @@ final class Version20250831013403 extends AbstractMigration
     {
         // this up() migration is auto-generated, please modify it to your needs
         $this->addSql(<<<'SQL'
-            DROP TABLE sessions
-        SQL);
-        $this->addSql(<<<'SQL'
-            ALTER TABLE download CHANGE created_at created_at DATETIME NOT NULL, CHANGE updated_at updated_at DATETIME NOT NULL
+            DROP TABLE IF EXISTS  sessions
         SQL);
         $this->addSql(<<<'SQL'
             ALTER TABLE user_preference CHANGE preference_value preference_value VARCHAR(1024) DEFAULT NULL
@@ -37,9 +34,6 @@ final class Version20250831013403 extends AbstractMigration
         $this->addSql(<<<'SQL'
             CREATE TABLE sessions (sess_id VARBINARY(128) NOT NULL, sess_data LONGBLOB NOT NULL, sess_lifetime INT UNSIGNED NOT NULL, sess_time INT UNSIGNED NOT NULL, INDEX sess_lifetime_idx (sess_lifetime), PRIMARY KEY(sess_id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_bin` ENGINE = InnoDB COMMENT = '' 
         SQL);
-        $this->addSql(<<<'SQL'
-            ALTER TABLE download CHANGE created_at created_at DATETIME DEFAULT NULL, CHANGE updated_at updated_at DATETIME DEFAULT NULL
-        SQL);
         $this->addSql(<<<'SQL'
             ALTER TABLE user_preference CHANGE preference_value preference_value VARCHAR(255) DEFAULT NULL
         SQL);