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app.py

@@ -166,13 +166,15 @@ def get_rows(
     limit: int = Query(20, ge=1, le=100)
 ):
     """Get paginated rows from a config."""
+    import traceback
     try:
         sql = f"SELECT * FROM data LIMIT {limit} OFFSET {offset}"
         rows = query_parquet(config, sql)
 
         # Get total count
         count_sql = "SELECT COUNT(*) as cnt FROM data"
-        total = query_parquet(config, count_sql)[0]["cnt"]
+        count_result = query_parquet(config, count_sql)
+        total = count_result[0]["cnt"] if count_result else 0
 
         return {
             "rows": rows,
@@ -180,8 +182,10 @@ def get_rows(
             "offset": offset,
             "limit": limit
         }
+    except HTTPException:
+        raise
     except Exception as e:
-        raise HTTPException(status_code=500, detail=str(e))
+        return {"error": str(e), "traceback": traceback.format_exc()}
 
 
 @app.get("/search/{config}")