diff --git a/src/services/github.js b/src/services/github.js
index e2bda91..eb5adc0 100644
--- a/src/services/github.js
+++ b/src/services/github.js
@@ -101,8 +101,13 @@ export async function fetchRepos(org, repoCount, pat) {
 export async function fetchContributors(org, repo, pat) {
   const all = []
   for(let page = 1; ; page++) {
+    if (page > 50) break
     const url = `https://api.github.com/repos/${org}/${repo}/contributors?per_page=100&page=${page}`
     const data = await fetchWithCache(url, pat)
+    if (!Array.isArray(data)) {
+      console.warn(`[fetchContributors] Unexpected response on page ${page} for ${org}/${repo}:`, data)
+      break
+    }
     all.push(...data)
     if(data.length < 100) break
   }
@@ -112,8 +117,13 @@ export async function fetchContributors(org, repo, pat) {
 export async function fetchIssues(org, repo, pat) {
   const all = []
   for(let page = 1; ; page++) {
+    if (page > 50) break
     const url = `https://api.github.com/repos/${org}/${repo}/issues?state=all&per_page=100&page=${page}`
     const data = await fetchWithCache(url, pat)
+    if (!Array.isArray(data)) {
+      console.warn(`[fetchIssues] Unexpected response on page ${page} for ${org}/${repo}:`, data)
+      break
+    }
     all.push(...data)
     if(data.length < 100) break
   }