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In functions.php line 974, the
![loop_orderby_error](https://user-images.githubusercontent.com/4011193/228386038-ed54ba93-1daa-4500-bf0e-cd437fa6bf5f.png)
if
statement that checks for the truthiness of$loop_orderby
should use isset. Without this, an error appears in debug mode:Using
isset
is the less error-inducing way of checking if a variable is defined.