Update server.mjs

server.mjs

@@ -77,7 +77,7 @@ function buildR2PresignedPutUrl(key, contentType) {
   const canonicalQuery = canonicalQueryString(query);
   const canonicalHeaders = "content-type:" + contentType.trim().replace(/\s+/g, " ") + "\n" + "host:" + host + "\n";
   const canonicalRequest = ["PUT", canonicalUri, canonicalQuery, canonicalHeaders, signedHeaders, "UNSIGNED-PAYLOAD"].join("\n");
-  const stringToSign = ["AWS4-HMAC-SHA256", amzDate, credentialScope, sha256Hex(canonicalRequest)].join("\\n");
+  const stringToSign = ["AWS4-HMAC-SHA256", amzDate, credentialScope, sha256Hex(canonicalRequest)].join("\n");
   const signature = hmacHex(getSignatureKey(R2_SECRET_ACCESS_KEY, dateStamp), stringToSign);
   return "https://" + host + canonicalUri + "?" + canonicalQuery + "&X-Amz-Signature=" + signature;
 }