502 Bad Gateway nginx/1.22.1

Hello. I have deployed IoT cloud web page from Siemens LOGO! LWE software application according instructions included in it. Everything seemed correct IoT registering successfull and deployment was confirmed. I have got an email address. But error message mentioned above appeared when web address created was tested by web browser. Please could the error message "502 Bad Gateway nginx/1.22.1" give some advice where the problem could be? I only know about default gateway in my router and it is 192.168.68.1.