i have an SyntaxError: Unexpected end of JSON input and i dont know how to solve that. My method at controller was return a json but why its still error. When i change the method to post it ok but i need it as get , please help me

This my code to fetch endpoint at my laravel 10 controller

async function searchFunction() {
            let input, filter;
            input = document.getElementById('searchInput');
            search = input.value;

            try {
                // Make a request to the server
                const response = await fetch(`/warga/search?search=${search}`, {
                    method: 'GET',
                    headers: {
                        'Content-Type': 'application/json',
                        'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').content,
                    },
                });

                const responseData = await response.json();

                clearTable();

                responseData.forEach(item => {
                    addRowToTable(item);
                });
            } catch (error) {
                console.error('Error:', error);
            }
        }

This is the method at my controller

    {
        $search = $request->input('search', '');
        $warga = Warga::with('alamat')
            ->where('nama', 'like', "%{$search}%")
            ->paginate(6);

        if ($warga->isEmpty()) {
            return response()->json(['error' => 'No results found'], 404);
        }

        // Return pagination data along with the results
        return response()->json([
            $warga,
            'pagination' => [
                'total' => $warga->total(),
                'per_page' => $warga->perPage(),
                'current_page' => $warga->currentPage(),
                'last_page' => $warga->lastPage(),
            ],
        ], 200);
    }```

This the route
```Route::get('/warga/search', [AppHttpControllersCivilliantController::class, 'search']);

i have try to debug at console and idk why my method return a blank page or somethimes 419 expired