diff --git a/admin.html b/admin.html
index 52617c3..09b7071 100644
--- a/admin.html
+++ b/admin.html
@@ -1281,7 +1281,7 @@
         </div>
 
         <!-- Routing & Radius Panel (Right) -->
-        <div class="routing-panel">
+        <!-- <div class="routing-panel">
           <h3>📍 ROUTING & RADIUS</h3>
           <button class="btn btn-sm" id="btn-nearest-spbu" style="width:100%; background:#2563eb; color:white; border:none; padding:8px; border-radius:6px; cursor:pointer; font-weight:600; font-size:12px; margin-bottom:6px;">📍 Cari SPBU Terdekat</button>
           <div id="nearest-spbu-result" style="font-size:11px; color:#94a3b8; margin-bottom:10px;"></div>
@@ -1292,7 +1292,7 @@
             <span id="radius-value">500 m</span>
             <span style="color:#64748b;">(Klik peta)</span>
           </div>
-        </div>
+        </div> -->
 
         <!-- Floating "Tambah Data" Toolbar -->
         <div id="map-add-toolbar" style="
diff --git a/backend/koneksi.php b/backend/koneksi.php
index 981fa4a..e7d954a 100644
--- a/backend/koneksi.php
+++ b/backend/koneksi.php
@@ -3,20 +3,27 @@
 // koneksi.php — Konfigurasi Database
 // ============================================
 
-define('DB_HOST', 'localhost');
-define('DB_USER', 'root');       // Sesuaikan dengan user MySQL Anda
-define('DB_PASS', '');           // Sesuaikan dengan password MySQL Anda
-define('DB_NAME', 'webgis_spbu');
+define('DB_HOST', getenv('DB_HOST') ?: 'localhost');
+define('DB_USER', getenv('DB_USER') ?: 'root');
+define('DB_PASS', getenv('DB_PASS') ?: '');
+define('DB_NAME', getenv('DB_NAME') ?: 'webgis_spbu');
+
+// Mengaktifkan exception untuk mysqli agar error bisa ditangkap dengan try-catch
+mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
 
 function getConnection(): mysqli {
-    $conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
-
-    if ($conn->connect_error) {
+    try {
+        $conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
+        $conn->set_charset('utf8mb4');
+        return $conn;
+    } catch (mysqli_sql_exception $e) {
         http_response_code(500);
-        echo json_encode(['success' => false, 'message' => 'Koneksi database gagal: ' . $conn->connect_error]);
+        header('Content-Type: application/json');
+        echo json_encode([
+            'status' => 'error', 
+            'message' => 'Koneksi database gagal',
+            'error_detail' => $e->getMessage() // Detail error ini akan muncul di tab Network
+        ]);
         exit;
     }
-
-    $conn->set_charset('utf8mb4');
-    return $conn;
 }
diff --git a/backend/register.php b/backend/register.php
index 0be65ce..48fbd16 100644
--- a/backend/register.php
+++ b/backend/register.php
@@ -22,23 +22,32 @@ if (empty($username) || empty($password)) {
     exit;
 }
 
-// Check if username already exists
-$stmt = $c->prepare("SELECT id FROM users WHERE username = ?");
-$stmt->bind_param("s", $username);
-$stmt->execute();
-$result = $stmt->get_result();
+try {
+    // Check if username already exists
+    $stmt = $c->prepare("SELECT id FROM users WHERE username = ?");
+    $stmt->bind_param("s", $username);
+    $stmt->execute();
+    $result = $stmt->get_result();
 
-if ($result->fetch_assoc()) {
-    echo json_encode(['status' => 'error', 'message' => 'Username sudah digunakan']);
-    exit;
-}
-
-$passwordHash = password_hash($password, PASSWORD_DEFAULT);
-$stmt = $c->prepare("INSERT INTO users (username, password) VALUES (?, ?)");
-$stmt->bind_param("ss", $username, $passwordHash);
-
-if ($stmt->execute()) {
-    echo json_encode(['status' => 'success', 'message' => 'Registrasi berhasil, silakan login']);
-} else {
-    echo json_encode(['status' => 'error', 'message' => 'Gagal mendaftar akun']);
+    if ($result->fetch_assoc()) {
+        echo json_encode(['status' => 'error', 'message' => 'Username sudah digunakan']);
+        exit;
+    }
+
+    $passwordHash = password_hash($password, PASSWORD_DEFAULT);
+    $stmt = $c->prepare("INSERT INTO users (username, password) VALUES (?, ?)");
+    $stmt->bind_param("ss", $username, $passwordHash);
+
+    if ($stmt->execute()) {
+        echo json_encode(['status' => 'success', 'message' => 'Registrasi berhasil, silakan login']);
+    } else {
+        echo json_encode(['status' => 'error', 'message' => 'Gagal mendaftar akun']);
+    }
+} catch (mysqli_sql_exception $e) {
+    http_response_code(500);
+    echo json_encode([
+        'status' => 'error', 
+        'message' => 'Terjadi kesalahan server saat registrasi',
+        'error_detail' => $e->getMessage() // Detail error SQL
+    ]);
 }