diff --git a/src/start.ts b/src/start.ts
deleted file mode 100644
index 2086427..0000000
--- a/src/start.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-import { createStart, createMiddleware } from "@tanstack/react-start";
-
-import { renderErrorPage } from "./lib/error-page";
-import { attachSupabaseAuth } from "@/integrations/supabase/auth-attacher";
-
-const errorMiddleware = createMiddleware().server(async ({ next }) => {
-  try {
-    return await next();
-  } catch (error) {
-    if (error != null && typeof error === "object" && "statusCode" in error) {
-      throw error;
-    }
-    console.error(error);
-    return new Response(renderErrorPage(), {
-      status: 500,
-      headers: { "content-type": "text/html; charset=utf-8" },
-    });
-  }
-});
-
-export const startInstance = createStart(() => ({
-  functionMiddleware: [attachSupabaseAuth],
-  requestMiddleware: [errorMiddleware],
-}));