No ‘Access-Control-Allow-Origin’ when sending rpc command

Hi,

i'am trying to use RPC command on my web app but seems like my wallet is refusing the connexion. can you please advise ? how can i avoid this error ?

Access to XMLHttpRequest at 'http://localhost:8766/' from origin 'http://localhost:3000' 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.

​

thank you