error on connecting to seller api

[eternalparquet]

Hello, I have this error on connecting to seller api.
CustomError: The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details.The Canonical String for this request should have been'GET/products/pricing/v0/competitivePriceMarketplaceId=APJ6JRA9NG5V4&asins=B00FZ5MTFOhost:sellingpartnerapi-eu.amazon.comuser-agent:amazon-sp-api/0.6.6 (Language=Node.js/v12.22.5; Platform=Linux/5.10.0-8-amd64)x-amz-access-token:XXXhost;user-agent;x-amz-access-token;x-amz-dateXXX'The String-to-Sign should have been'XXX/eu-west-1/execute-api/aws4_requestXXX'

that's the code:

     var data = await (async() => {
        try {
          let sellingPartner = new SellingPartnerAPI({
            region:'eu',
            refresh_token: "XXX",
            options:{
              auto_request_tokens:false,
              only_grantless_operations:false,
            },
            credentials:{
                  SELLING_PARTNER_APP_CLIENT_ID: "XXX",
                  SELLING_PARTNER_APP_CLIENT_SECRET: "XXX",
                  AWS_ACCESS_KEY_ID: "XXX",
                  AWS_SECRET_ACCESS_KEY: "XXX",
                  AWS_SELLING_PARTNER_ROLE: "XXX"
            }
          });
          await sellingPartner.refreshAccessToken();
          await sellingPartner.refreshRoleCredentials();
          let res = await sellingPartner.callAPI({
            operation:'getCompetitivePricing',
            endpoint:'productPricing',
            query:{
                 MarketplaceId:'APJ6JRA9NG5V4',
                 asins:['B00FZ5MTFO']
            }
          });
          return res;

        } catch(e){
          console.log(e);
          return e;
        }
      })();

[eternalparquet]

I need to use path { asin }