Hi,
Thank you for the access, I was able to see the debug data:
1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1 SQL=SELECT * FROM vit_hikashop_address WHERE address_id =
Call stack
# Function Location
1 JApplicationCms->execute() /volume1/web/justlovepaint/administrator/index.php:51
2 JApplicationAdministrator->doExecute() /volume1/web/justlovepaint/libraries/cms/application/cms.php:257
3 JApplicationAdministrator->dispatch() /volume1/web/justlovepaint/libraries/cms/application/administrator.php:152
4 JComponentHelper::renderComponent() /volume1/web/justlovepaint/libraries/cms/application/administrator.php:98
5 JComponentHelper::executeComponent() /volume1/web/justlovepaint/libraries/cms/component/helper.php:380
6 require_once() /volume1/web/justlovepaint/libraries/cms/component/helper.php:405
7 hikashopController->execute() /volume1/web/justlovepaint/administrator/components/com_hikashop/hikashop.php:54
8 JControllerLegacy->execute() /volume1/web/justlovepaint/administrator/components/com_hikashop/helpers/helper.php:1630
9 OrderController->savechangestatus() /volume1/web/justlovepaint/libraries/legacy/controller/legacy.php:728
10 OrderController->_save() /volume1/web/justlovepaint/administrator/components/com_hikashop/controllers/order.php:432
11 hikashopOrderClass->save() /volume1/web/justlovepaint/administrator/components/com_hikashop/controllers/order.php:491
12 JEventDispatcher->trigger() /volume1/web/justlovepaint/administrator/components/com_hikashop/classes/order.php:416
13 JEvent->update() /volume1/web/justlovepaint/libraries/joomla/event/dispatcher.php:160
14 call_user_func_array() /volume1/web/justlovepaint/libraries/joomla/event/event.php:69
15 plgHikashopInvoicemanager->onAfterOrderUpdate()
16 plgHikashopInvoicemanager->create_invoice() /volume1/web/justlovepaint/plugins/hikashop/invoicemanager/invoicemanager.php:34
17 JDatabaseDriver->loadObject() /volume1/web/justlovepaint/plugins/hikashop/invoicemanager/invoicemanager.php:78
18 JDatabaseDriverMysqli->execute() /volume1/web/justlovepaint/libraries/joomla/database/driver.php:1653
As you can see, the problem is with a MySQL query in the invoicemanager plugin. That's not a plugin from HikaShop. So you need to contact the developer of that plugin so tha they can tell you what to change in order to avoid the problem.
It should be an easy modification to do near the line 78 of the file plugins/hikashop/invoicemanager/invoicemanager.php
If you provide the debug data above to the developer, he will be able to tell you what to do.