Compatibility issues with PHP8.3

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  • Plugin Contributor Parhum Khoshbakht

    (@parhumm)

    3 weeks ago

    Hi @thefriendlancer ,

    Thanks for the detailed report and for testing on both PHP versions.

    The jump from PHP 7.4 to 8.3 is a big one – PHP 8.0 removed several functions that older code relied on (like each() and create_function()), and any plugin still using them will crash with a 500 error. We’ve cleaned all of these out in recent releases. Version 5.4.11 has been verified compatible with PHP 8.3.

    Could you check which version of SlimStat you’re running? You’ll find it under Dashboard > Plugins. If it’s anything older than 5.4.x, updating to 5.4.11 should fix this. You can update from the WordPress admin (Plugins > Update) or by uploading the latest version via FTP to overwrite the existing install.

    If you’re already on the latest version and the 500s persist, the next step would be to check the PHP error log. The screenshot you shared shows the HTTP access log (the 500 status codes), but the actual PHP error message that tells us exactly what went wrong lives in a different log. Add these two lines to your wp-config.php, reload a page, then check wp-content/debug.log:

    define( 'WP_DEBUG', true );
    define( 'WP_DEBUG_LOG', true );

    Share the SlimStat-related lines from that file and we’ll pinpoint the exact issue.

    Thread Starter thefriendlancer

    (@thefriendlancer)

    2 weeks, 1 day ago

    Hi @parhumm

    We are using the latest version of the plugin – Version 5.4.11

    When I reported it, we were using Version 5.4.9 but I just upgraded now to Version 5.4.11 but issue is still the same.

    Below are the error logs:

    [24-Apr-2026 13:22:30 UTC] PHP Fatal error: Uncaught Error: Class “finfo” not found in /home/username/public_html/wp-content/plugins/wp-slimstat/src/Dependencies/League/MimeTypeDetection/FinfoMimeTypeDetector.php:30
    Stack trace: 0 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Dependencies/League/Flysystem/Local/LocalFilesystemAdapter.php(82): SlimStat\Dependencies\League\MimeTypeDetection\FinfoMimeTypeDetector->__construct() 1 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Services/Browscap.php(119): SlimStat\Dependencies\League\Flysystem\Local\LocalFilesystemAdapter->__construct(‘/home/username…’) 2 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Services/Browscap.php(64): SlimStat\Services\Browscap::get_browser_from_browscap(Array, ‘/home/username…’) 3 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Tracker/Processor.php(362): SlimStat\Services\Browscap::get_browser() 4 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Tracker/Ajax.php(440): SlimStat\Tracker\Processor::process() 5 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Tracker/Tracker.php(18): SlimStat\Tracker\Ajax::process() 6 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Controllers/Rest/TrackingRestController.php(221): SlimStat\Tracker\Tracker::slimtrack_ajax() 7 /home/username/public_html/wp-includes/rest-api/class-wp-rest-server.php(1292): SlimStat\Controllers\Rest\TrackingRestController->handle_tracking(Object(WP_REST_Request)) 8 /home/username/public_html/wp-includes/rest-api/class-wp-rest-server.php(1125): WP_REST_Server->respond_to_request(Object(WP_REST_Request), ‘/slimstat/v1/hi…’, Array, NULL) 9 /home/username/public_html/wp-includes/rest-api/class-wp-rest-server.php(439): WP_REST_Server->dispatch(Object(WP_REST_Request)) 10 /home/username/public_html/wp-includes/rest-api.php(467): WP_REST_Server->serve_request(‘/slimstat/v1/hi…’) 11 /home/username/public_html/wp-includes/class-wp-hook.php(341): rest_api_loaded(Object(WP)) 12 /home/username/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(”, Array) 13 /home/username/public_html/wp-includes/plugin.php(570): WP_Hook->do_action(Array) 14 /home/username/public_html/wp-includes/class-wp.php(418): do_action_ref_array(‘parse_request’, Array) 15 /home/username/public_html/wp-includes/class-wp.php(821): WP->parse_request(”) 16 /home/username/public_html/wp-includes/functions.php(1343): WP->main(”) 17 /home/username/public_html/wp-blog-header.php(16): wp() 18 /home/username/public_html/index.php(17): require(‘/home/username…’) 19 {main}

    thrown in /home/username/public_html/wp-content/plugins/wp-slimstat/src/Dependencies/League/MimeTypeDetection/FinfoMimeTypeDetector.php on line 30
    [24-Apr-2026 13:22:32 UTC] PHP Fatal error: Uncaught Error: Class “finfo” not found in /home/username/public_html/wp-content/plugins/wp-slimstat/src/Dependencies/League/MimeTypeDetection/FinfoMimeTypeDetector.php:30
    Stack trace: 0 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Dependencies/League/Flysystem/Local/LocalFilesystemAdapter.php(82): SlimStat\Dependencies\League\MimeTypeDetection\FinfoMimeTypeDetector->__construct() 1 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Services/Browscap.php(119): SlimStat\Dependencies\League\Flysystem\Local\LocalFilesystemAdapter->__construct(‘/home/username…’) 2 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Services/Browscap.php(64): SlimStat\Services\Browscap::get_browser_from_browscap(Array, ‘/home/username…’) 3 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Tracker/Processor.php(362): SlimStat\Services\Browscap::get_browser() 4 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Tracker/Ajax.php(440): SlimStat\Tracker\Processor::process() 5 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Tracker/Tracker.php(18): SlimStat\Tracker\Ajax::process() 6 /home/username/public_html/wp-content/plugins/wp-slimstat/src/Controllers/Rest/TrackingRestController.php(221): SlimStat\Tracker\Tracker::slimtrack_ajax() 7 /home/username/public_html/wp-includes/rest-api/class-wp-rest-server.php(1292): SlimStat\Controllers\Rest\TrackingRestController->handle_tracking(Object(WP_REST_Request)) 8 /home/username/public_html/wp-includes/rest-api/class-wp-rest-server.php(1125): WP_REST_Server->respond_to_request(Object(WP_REST_Request), ‘/slimstat/v1/hi…’, Array, NULL) 9 /home/username/public_html/wp-includes/rest-api/class-wp-rest-server.php(439): WP_REST_Server->dispatch(Object(WP_REST_Request)) 10 /home/username/public_html/wp-includes/rest-api.php(467): WP_REST_Server->serve_request(‘/slimstat/v1/hi…’) 11 /home/username/public_html/wp-includes/class-wp-hook.php(341): rest_api_loaded(Object(WP)) 12 /home/username/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(”, Array) 13 /home/username/public_html/wp-includes/plugin.php(570): WP_Hook->do_action(Array) 14 /home/username/public_html/wp-includes/class-wp.php(418): do_action_ref_array(‘parse_request’, Array) 15 /home/username/public_html/wp-includes/class-wp.php(821): WP->parse_request(”) 16 /home/username/public_html/wp-includes/functions.php(1343): WP->main(”) 17 /home/username/public_html/wp-blog-header.php(16): wp() 18 /home/username/public_html/index.php(17): require(‘/home/username…’) 19 {main}

    thrown in /home/username/public_html/wp-content/plugins/wp-slimstat/src/Dependencies/League/MimeTypeDetection/FinfoMimeTypeDetector.php on line 30

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