Fatal error: Uncaught exception 'RuntimeException' with message 'Błąd API Synerise (HTTP 400): Some fields did not pass validation' in /libc/SyneriseClient.php:231 Stack trace: #0 /libc/SyneriseClient.php(119): SyneriseClient->request('POST', '/v4/events/adde...', Array, Array) #1 /sklep/_up.php(48): SyneriseClient->post('/v4/events/adde...', Array) #2 {main} thrown in /libc/SyneriseClient.php on line 231