Deprecated: Return type of PageImages\PageImageCandidate::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /homepages/32/d236048320/htdocs/karlpolanyi/wiki/extensions/PageImages/includes/PageImageCandidate.php on line 99 Roosevelt smashes the Conference - Karl Polanyi
