PHP8: PHP Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given #20323
Description
One of the plugin user has a Fatal error in Matomo.
PHP Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /nas/content/live/careatprod/wp-content/plugins/matomo/app/core/Filesystem.php:154 Stack trace:
#0 /nas/content/live/careatprod/wp-content/plugins/matomo/app/core/Filesystem.php(154): count(NULL)
#1 /nas/content/live/careatprod/wp-content/plugins/matomo/app/plugins/Diagnostics/Diagnostic/NfsDiskCheck.php(36): Piwik\Filesystem::checkIfFileSystemIsNFS()
#2 /nas/content/live/careatprod/wp-content/plugins/matomo/app/plugins/Diagnostics/DiagnosticService.php(68): Piwik\Plugins\Diagnostics\Diagnostic\NfsDiskCheck->execute()
#3 /nas/content/live/careatprod/wp-content/plugins/matomo/app/plugins/Diagnostics/DiagnosticService.php(54): Piwik\Plugins\Diagnostics\DiagnosticService->run(Array)
#4 /nas/content/live/careatprod/wp-content/plugins/matomo/classes/WpMatomo/Admin/SystemReport.php(401): Piwik\Plugins\Diagnostics\DiagnosticService->runDiagnostics()
#5 /nas/content/live/careatprod/wp-content/plugins/matomo/classes/WpMatomo/Admin/SystemReport.php(240): WpMatomo\Admin\SystemReport->get_matomo_info()
#6 /nas/content/live/careatprod/wp-includes/class-wp-hook.php(308): WpMatomo\Admin\SystemReport->show('')
#7 /nas/content/live/careatprod/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array)
#8 /nas/content/live/careatprod/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#9 /nas/content/live/careatprod/wp-admin/admin.php(259): do_action('matomo-analytic...')
#10 {main} thrown in /nas/content/live/careatprod/wp-content/plugins/matomo/app/core/Filesystem.php on line 154
Expected Behavior
No Fatal error.
Current Behavior
Possible Solution
cast $output as array after the exec command.
$output = (array) $output;
Steps to Reproduce (for Bugs)
Context
Your Environment
- Matomo Version: 4.12.0
- PHP Version: 8
- Server Operating System:
- Additionally installed plugins:
- Browser:
- Operating System: