diff --git a/src/pages/forwarding/Edit.tsx b/src/pages/forwarding/Edit.tsx
index 7dac4eb02c8055b662cbd7554b73e4e0ff78b0d4..265ebf68669d3c22246f82e62180e37a4eca0326 100644
--- a/src/pages/forwarding/Edit.tsx
+++ b/src/pages/forwarding/Edit.tsx
@@ -38,9 +38,7 @@ export default function ForwardingEdit() {
   useEffect(() => {
     authFetch(`/api/forwarding?forwardingId=${id}`)
       .then((response) => {
-        if (!response.ok) {
-          throw Error();
-        }
+        if (!response.ok) throw Error(`포트포워딩 정보 조회 실패: ${response.status}`);
 
         return response.json();
       })
diff --git a/src/pages/forwarding/List.tsx b/src/pages/forwarding/List.tsx
index 3fa1999d9691a1ac653dc02ca6eb6d0032490d4f..b924b2ed09fc327fec3e2db64bca382d022a58bd 100644
--- a/src/pages/forwarding/List.tsx
+++ b/src/pages/forwarding/List.tsx
@@ -29,15 +29,16 @@ export default function ForwardingList() {
   useEffect(() => {
     authFetch(`/api/forwardings?projectId=${selectedProject?.id}`)
       .then((response) => {
-        if (!response.ok) {
-          toast.error('포트포워딩 정보를 조회할 수 없습니다.');
-          return { forwardings: [] };
-        }
+        if (!response.ok) throw Error(`포트포워딩 목록 조회 실패: ${response.status}`);
 
         return response.json();
       })
       .then(({ contents }) => {
         setForwardings(contents);
+      })
+      .catch((error) => {
+        console.error(error);
+        toast.error('포트포워딩 정보를 조회할 수 없습니다.');
       });
   }, [authFetch, selectedProject]);
 
diff --git a/src/pages/routing/Create.tsx b/src/pages/routing/Create.tsx
index 8011001f83f1625cf6c1e32d25072edfe61000fc..c60b5f13db5b9af3d360c73fadf4d8e24cbac90e 100644
--- a/src/pages/routing/Create.tsx
+++ b/src/pages/routing/Create.tsx
@@ -75,14 +75,16 @@ export default function RoutingCreate() {
     if (enableSSL) {
       authFetch(`/api/certificates?projectId=${selectedProject?.id}&domain=${debouncedDomain}`)
         .then((response) => {
-          if (!response.ok) {
-            toast.error('SSL 인증서 목록을 불러올 수 없습니다');
-            return { contents: [] };
-          }
+          if (!response.ok) throw Error(`SSL 인증서 목록 조회 실패: ${response.status}`);
+
           return response.json();
         })
         .then(({ contents }) => {
           setCertificates(contents);
+        })
+        .catch((error) => {
+          console.error(error);
+          toast.error('SSL 인증서 목록을 불러올 수 없습니다.');
         });
     }
   }, [authFetch, enableSSL, selectedProject, debouncedDomain]);
diff --git a/src/pages/routing/Edit.tsx b/src/pages/routing/Edit.tsx
index 6a40926efb01c373ac5d727843d7b638c280af72..0520a9a9f20deeb68fca6425585e4e32293cdf4c 100644
--- a/src/pages/routing/Edit.tsx
+++ b/src/pages/routing/Edit.tsx
@@ -78,10 +78,7 @@ export default function RoutingEdit() {
   useEffect(() => {
     authFetch(`/api/routing?routingId=${id}`)
       .then((response) => {
-        if (!response.ok) {
-          console.error(response);
-          throw Error();
-        }
+        if (!response.ok) throw Error(`라우팅 정보 조회 실패: ${response.status}`);
 
         return response.json();
       })
@@ -116,14 +113,16 @@ export default function RoutingEdit() {
     if (enableSSL) {
       authFetch(`/api/certificates?projectId=${selectedProject?.id}&domain=${debouncedDomain}`)
         .then((response) => {
-          if (!response.ok) {
-            toast.error('SSL 인증서 목록을 불러올 수 없습니다');
-            return { contents: [] };
-          }
+          if (!response.ok) throw Error(`SSL 인증서 목록 조회 실패: ${response.status}`);
+
           return response.json();
         })
         .then(({ contents }) => {
           setCertificates(contents);
+        })
+        .catch((error) => {
+          console.error(error);
+          toast.error('SSL 인증서 목록을 불러올 수 없습니다.');
         });
     }
   }, [authFetch, enableSSL, selectedProject, debouncedDomain]);
diff --git a/src/pages/routing/List.tsx b/src/pages/routing/List.tsx
index a50c4dc94081bf481cc5563eaddc1c9d888c671a..d1e5b46000726fb49dcd7df84d1c07cd79721546 100644
--- a/src/pages/routing/List.tsx
+++ b/src/pages/routing/List.tsx
@@ -30,15 +30,16 @@ export default function RoutingList() {
   useEffect(() => {
     authFetch(`/api/routings?projectId=${selectedProject?.id}`)
       .then((response) => {
-        if (!response.ok) {
-          toast.error('라우팅 정보를 조회할 수 없습니다.');
-          return { contents: [] };
-        }
+        if (!response.ok) throw Error(`라우팅 목록 조회 실패: ${response.status}`);
 
         return response.json();
       })
       .then(({ contents }) => {
         setRoutings(contents);
+      })
+      .catch((error) => {
+        console.error(error);
+        toast.error('라우팅 정보를 조회할 수 없습니다.');
       });
   }, [authFetch, selectedProject]);