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app/Http/Controllers/admin/Keyboard.php

@@ -79,7 +79,7 @@ class Keyboard extends Controller
                 'explain' => 'nullable|string',
                 'language' => 'required|string',
                 'image' => ['nullable', 'url'],
-                'button' => ['nullable', 'string'],
+                'button' => ['nullable', 'string', 'max:100'],
                 'buttons' => ['array'],
                 'buttons.*' => ['array', 'min:1'],
                 'buttons.*.*.text' => ['required', 'string', 'min:1'],