diff --git a/data/overrides.json b/data/overrides.json
index a5dadc7..29bac2f 100644
--- a/data/overrides.json
+++ b/data/overrides.json
@@ -1,5 +1,3 @@
 {
-  "reverseHolofoil": {
-    "dp7-65": true
-  }
+  "reverseHolofoil": {}
 }
\ No newline at end of file
diff --git a/docker-compose.yml b/docker-compose.yml
index 7b8d8a5..796630e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -20,6 +20,9 @@ services:
       # Select host port via APP_PORT env var; default 3000
       - "${APP_PORT:-3000}:3000"
     volumes:
-      # Persist local cache JSON files
-      - ./data:/app/data
+      # Persist cache JSON files using a named volume
+      - magikarp-data:/app/data
     restart: unless-stopped
+
+volumes:
+  magikarp-data:
diff --git a/src/app/api/magikarp/route.ts b/src/app/api/magikarp/route.ts
index 7c02aac..f240791 100644
--- a/src/app/api/magikarp/route.ts
+++ b/src/app/api/magikarp/route.ts
@@ -72,6 +72,6 @@ export async function GET(req: NextRequest) {
         { status: 200 }
       );
     }
-    return Response.json({ error: 'Failed to fetch cards' }, { status: 500 });
+    return Response.json({ error: `Failed to fetch cards: ${err}` }, { status: 500 });
   }
 }
diff --git a/src/app/page.tsx b/src/app/page.tsx
index 623e244..90f1ff3 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -96,7 +96,7 @@ export default function Page() {
     setError(null);
     try {
       const res = await fetch('/api/magikarp?pageSize=250&refresh=1', { cache: 'no-store' });
-      if (!res.ok) throw new Error('Failed to refresh');
+      if (!res.ok) throw new Error(`Failed to refresh: ${res.body}`);
       const json = await res.json();
       const list: TcgCard[] = json.data || [];
       list.sort((a, b) => {