diff --git a/src/core/config/OperationConfig.js b/src/core/config/OperationConfig.js
index a22bc9e2..0d6778fc 100755
--- a/src/core/config/OperationConfig.js
+++ b/src/core/config/OperationConfig.js
@@ -3407,7 +3407,7 @@ const OperationConfig = {
"
",
"You can add headers line by line in the format Key: Value
",
"
",
- "This operation will throw an error for any status code that is not 200, unless the 'Ignore status code' option is checked.",
+ "The status code of the response, along with a limited selection of exposed headers, can be viewed by checking the 'Show response metadata' option. Only a limited set of response headers are exposed by the browser for security reasons.",
].join("\n"),
run: HTTP.runHTTPRequest,
inputType: "string",
diff --git a/src/core/operations/HTTP.js b/src/core/operations/HTTP.js
index fd90f455..c02c3628 100755
--- a/src/core/operations/HTTP.js
+++ b/src/core/operations/HTTP.js
@@ -126,6 +126,10 @@ const HTTP = {
return fetch(url, config)
.then(r => {
+ if (r.status === 0 && r.type === "opaque") {
+ return "Error: Null response. Try setting the connection mode to CORS.";
+ }
+
if (showResponseMetadata) {
let headers = "";
for (let pair of r.headers.entries()) {