Store categories

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Fatal error: Uncaught Error: Call to a member function fetch_all() on bool in D:\Web\system_functions.php:236 Stack trace: #0 D:\Web\system_functions.php(184): query_array_all('SELECT `t1`.*, ...') #1 D:\Web\store_categories.php(22): storecategories() #2 {main} thrown in D:\Web\system_functions.php on line 236