I have several sites in OpenCart. One main, and the rest created manually. Those that are created manually give an error when ordering and order_id is zero. I created them this way: by import of an already created site and its directory files (../system/storage). Please tell me how to fix this error.
/system/storage is a storage folder with temporary files.
Folders /system/storage/cache and /system/storage/modification should be cleared inside after you creating a copy (only empty index.html should exist there). The files in these folders system will create by itself.
If you are creating a copy - cope the root folder with admin, catalog etc, and all files in it (.htaccess, index.php, config.php etc.). Copy database. Then change 2 config.php (in root directory and admin). Clear cache and modification in /system/storage. Everything should work fine.
About a last screenshot - go to phpMyAdmin and make sure that column is set to auto increment and the other settings are correct.
