Could not connect Server and CORS

Hi there,

my dapps suddenly stops and display below error:

/#/:1 Access to XMLHttpRequest at ‘’ from origin ‘’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

did you check whether your server is sleeping or not? :eyes:

the server seems to work fine, maybe it was restarted at the time when it was not working