Fix for Candidate Not Iterable Error (#1082)

* candidates not iterable

* update the error message

* update error to debug

* update debug to info

* error message updates

dist/setup/index.js

@@ -97461,16 +97461,36 @@ function findReleaseFromManifest(semanticVersionSpec, architecture, manifest) {
     });
 }
 exports.findReleaseFromManifest = findReleaseFromManifest;
+function isIToolRelease(obj) {
+    return (typeof obj === 'object' &&
+        obj !== null &&
+        typeof obj.version === 'string' &&
+        typeof obj.stable === 'boolean' &&
+        Array.isArray(obj.files) &&
+        obj.files.every((file) => typeof file.filename === 'string' &&
+            typeof file.platform === 'string' &&
+            typeof file.arch === 'string' &&
+            typeof file.download_url === 'string'));
+}
 function getManifest() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
-            return yield getManifestFromRepo();
+            const repoManifest = yield getManifestFromRepo();
+            if (Array.isArray(repoManifest) &&
+                repoManifest.length &&
+                repoManifest.every(isIToolRelease)) {
+                return repoManifest;
+            }
+            throw new Error('The repository manifest is invalid or does not include any valid tool release (IToolRelease) entries.');
         }
         catch (err) {
             core.debug('Fetching the manifest via the API failed.');
             if (err instanceof Error) {
                 core.debug(err.message);
             }
+            else {
+                core.error('An unexpected error occurred while fetching the manifest.');
+            }
         }
         return yield getManifestFromURL();
     });
@@ -97518,6 +97538,9 @@ function installPython(workingDirectory) {
 }
 function installCpythonFromRelease(release) {
     return __awaiter(this, void 0, void 0, function* () {
+        if (!release.files || release.files.length === 0) {
+            throw new Error('No files found in the release to download.');
+        }
         const downloadUrl = release.files[0].download_url;
         core.info(`Download from "${downloadUrl}"`);
         let pythonPath = '';
@@ -97538,8 +97561,11 @@ function installCpythonFromRelease(release) {
         catch (err) {
             if (err instanceof tc.HTTPError) {
                 // Rate limit?
-                if (err.httpStatusCode === 403 || err.httpStatusCode === 429) {
-                    core.info(`Received HTTP status code ${err.httpStatusCode}.  This usually indicates the rate limit has been exceeded`);
+                if (err.httpStatusCode === 403) {
+                    core.error(`Received HTTP status code 403. This indicates a permission issue or restricted access.`);
+                }
+                else if (err.httpStatusCode === 429) {
+                    core.info(`Received HTTP status code 429.  This usually indicates the rate limit has been exceeded`);
                 }
                 else {
                     core.info(err.message);