Fixup

main.go

@@ -77,6 +77,10 @@ func uploadFile(filename string) (string, error) {
 	}
 	defer response.Body.Close()
 
+	if response.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("upload failed with status: %s", response.Status)
+	}
+
 	urlBytes, err := io.ReadAll(response.Body)
 	if err != nil {
 		return "", fmt.Errorf("failed to read response: %w", err)