diff --git a/process.php b/process.php
index c38cf9c..176f883 100755
--- a/process.php
+++ b/process.php
@@ -28,19 +28,46 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['voiceFile'])) {
         'target_lang' => $targetLanguage
     ];
 
+    // Build API URL
+    $apiUrl = PYTHON_API_URL . '/transcribe';
+
+    // DEBUG: Log the exact URL and configuration
+    error_log("=== UPLOAD DEBUG START ===");
+    error_log("PYTHON_API_URL constant: " . PYTHON_API_URL);
+    error_log("Full API URL: " . $apiUrl);
+    error_log("File name: " . $file['name']);
+    error_log("File size: " . $file['size']);
+    error_log("Output format: " . $outputFormat);
+
     // Send request to Python API
-    $ch = curl_init(PYTHON_API_URL . '/transcribe');
+    $ch = curl_init($apiUrl);
     curl_setopt($ch, CURLOPT_POST, 1);
     curl_setopt($ch, CURLOPT_POSTFIELDS, $formData);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($ch, CURLOPT_TIMEOUT, 300); // 5 minutes timeout for large files
 
     $response = curl_exec($ch);
+    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+    $curlError = curl_error($ch);
+    $effectiveUrl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
+
+    // DEBUG: Log response details
+    error_log("HTTP Code: " . $httpCode);
+    error_log("cURL Error: " . ($curlError ?: 'none'));
+    error_log("Effective URL: " . $effectiveUrl);
+
+    if ($httpCode === 301 || $httpCode === 302) {
+        $redirectUrl = curl_getinfo($ch, CURLINFO_REDIRECT_URL);
+        error_log("REDIRECT DETECTED!");
+        error_log("Redirect Location: " . ($redirectUrl ?: 'not provided'));
+    }
+
+    error_log("Response preview: " . substr($response, 0, 500));
+    error_log("=== UPLOAD DEBUG END ===");
 
     if (curl_errno($ch)) {
         echo json_encode(['success' => false, 'error' => "Error processing file: " . curl_error($ch)]);
     } else {
-        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 
         if ($httpCode === 200) {
             $data = json_decode($response, true);