Deprecated: Using null as an array offset is deprecated, use an empty string instead in /var/www/wiki/mediawiki/extensions/timeline/includes/Timeline.php on line 297
Seemingly $input is null...
/** * Given a user's input of font, identify the font * directory and font path that should be set * * @param ?string $input * @return array with 'dir', 'file' keys. Note that 'dir' might be false. */ private static function determineFont( $input ) { global $wgTimelineFonts, $wgTimelineFontFile, $wgTimelineFontDirectory; // Try the user-specified font, if invalid, use "default" $fullPath = $wgTimelineFonts[$input] ?? $wgTimelineFonts['default'] ?? false;