Hummingbird Optima Express conflict

When I activated Hummingbird along Optima Express + MarketBoost IDX Plugin it generates a fatal error at the bottom of all front pages.

Fatal error: Uncaught exception 'Exception' with message 'Serialization of 'SimpleXMLElement' is not allowed' in path/to/wp-includes/functions.php:440 Stack trace: #0 path/to/wp-includes/functions.php(440): serialize(Array) #1 path/to/wp-includes/option.php(334): maybe_serialize(Array) #2 path/to/wp-content/plugins/wp-hummingbird/core/modules/minify/class-minify-sources-collector.php(53)...

  • Adam Czajczyk

    Hello Zak

    I hope you're well today and I apologize for keeping you waiting. We were testing that and it turns out it's not actually Hummingbird conflict.

    The "Hummingbird" word in the error log that you shared here is just a path name, not a plugin reference so that might be confusing but Hummingbird is not needed for these error to occur.

    The error is triggered even with no Hummingbird and no other plugins enabled and the default Twenty Seventeen theme active. After registering it's enough to save settings (even without changing them) on "Optima Express -> IDX Pages" page.

    This would mean that it's an issue with the Optima Express plugin itself. It might be related to some incompatibility with latest WP or issues with PHP version. However, I recommend reaching out to the Optima Express support and report the bug to them.

    Kind regards,

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