Warning and Fatal error is thrown when code snippet "Manipulate the meta robots tag output" is used

[shabnam611]

Fatal error and warning from the "Manipulate the meta robots tag output"

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If we add this code snippet on the functions.php file, we face warning and fatal error like below:

Warning: array_map(): Expected parameter 2 to be an array, null given in …… /wp-content/themes/twentytwenty/functions.php on line 1060

Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array