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The error "Undefined variable $categories_list" is occurring because the $categories_list variable is not defined within the scope of the `get_categories()` function. To fix this, you can define the `$categories_list` variable as an empty array at the beginning of the `get_categories()` function, like lines 6,7, and the rest...
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The error "Undefined variable $categories_list" is occurring because the $categories_list variable is not defined within the scope of the
get_categories()function. To fix this, you can define the$categories_listvariable as an empty array at the beginning of theget_categories()function, like lines 6,7, and the rest...