diff --git a/frontend/js/main.js b/frontend/js/main.js
index f616ff9..1669e61 100644
--- a/frontend/js/main.js
+++ b/frontend/js/main.js
@@ -839,8 +839,13 @@ function showModal(html, onSubmit) {
   overlay.querySelector("#modal-back").onclick = () => closeModal();
   overlay.querySelector("#modal-cancel").onclick = () => closeModal();
   overlay.querySelector("#modal-ok").onclick = async () => {
-    const ok = await onSubmit(overlay);
-    if (ok !== false) { closeModal(); if (ok !== "norender") renderScreen(state.screen); }
+    try {
+      const ok = await onSubmit(overlay);
+      if (ok !== false) { closeModal(); if (ok !== "norender") renderScreen(state.screen); }
+    } catch (e) {
+      console.error("[showModal] onSubmit error:", e);
+      alert("Ошибка: " + e);
+    }
   };
 }