With minimum PHP version now 7.4, I think this method can probably be updated to match its parent and resolve this.
PHP Deprecated: Return type of LosMiddleware\RateLimit\RateLimitOptions::offsetGet($index) should either be compatible with ArrayObject::offsetGet(mixed $key): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/html/vendor/los/los-rate-limit/src/RateLimitOptions.php on line 46
With minimum PHP version now 7.4, I think this method can probably be updated to match its parent and resolve this.
PHP Deprecated: Return type of LosMiddleware\RateLimit\RateLimitOptions::offsetGet($index) should either be compatible with ArrayObject::offsetGet(mixed $key): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/html/vendor/los/los-rate-limit/src/RateLimitOptions.php on line 46