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Hello. I came across this one 500 error in my logs. Just passing it along. I run PHP 8.1. This could have been a one time blip, not sure at this point.
Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, WpOrg\Requests\Utility\CaseInsensitiveDictionary given in /wp-content/plugins/wp-optimize/includes/class-wp-optimize-gzip-compression.php:64