Update app.py

app.py

@@ -451,12 +451,17 @@ def load_session_history(selected_session=None):
                 transform: translateY(-2px);
                 box-shadow: 0 4px 10px rgba(0,0,0,0.15);
             }
-            .card-image {
+            .card-image-placeholder {
                 width: 100%;
                 height: 200px;
-                object-fit: cover;
+                background-color: #f5f5f5;
+                display: flex;
+                align-items: center;
+                justify-content: center;
                 border-radius: 4px;
                 margin-bottom: 10px;
+                color: #999;
+                font-size: 14px;
             }
             .card-name {
                 font-weight: bold;
@@ -480,17 +485,10 @@ def load_session_history(selected_session=None):
             image_path = item.get('image_url', '')
             prompt = html.escape(item.get('prompt', ''))
             
-            # 이미지를 base64로 인코딩
-            try:
-                image_data = get_image_base64(image_path)
-                image_url = f"data:image/png;base64,{image_data}"
-            except Exception as e:
-                print(f"Error loading image {image_path}: {e}")
-                image_url = "data:image/png;base64," + get_image_base64('default.png')  # 기본 이미지
-            
+            # 이미지 대신 플레이스홀더 사용
             html_content += f"""
             <div class="prompt-card" data-prompt="{prompt}" onclick="handleCardClick(this)">
-                <img src="{image_url}" class="card-image" alt="{name}">
+                <div class="card-image-placeholder">No Image</div>
                 <div class="card-name">{name}</div>
                 <div class="card-prompt">{prompt}</div>
             </div>