Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, bool given in /home/public/pm10/ws_luftdaten1.php:160
Stack trace:
#0 /home/public/pm10/index.php(246): include()
#1 {main}
thrown in /home/public/pm10/ws_luftdaten1.php on line 160