diff --git a/src/ChatView.tsx b/src/ChatView.tsx
index daacc9a..21e9d92 100644
--- a/src/ChatView.tsx
+++ b/src/ChatView.tsx
@@ -57,8 +57,15 @@ export class ChatView extends ItemView {
 	}
 
 	async render() {
+		// 确保容器元素存在
+		const containerElement = this.containerEl.children[1]
+		if (!containerElement || !(containerElement instanceof HTMLElement)) {
+			console.error('ChatView: Container element not found or invalid')
+			return
+		}
+
 		if (!this.root) {
-			this.root = createRoot(this.containerEl.children[1])
+			this.root = createRoot(containerElement)
 		}
 
 		const queryClient = new QueryClient({
@@ -92,7 +99,7 @@ export class ChatView extends ItemView {
 											<QueryClientProvider client={queryClient}>
 												<React.StrictMode>
 													<DialogProvider
-														container={this.containerEl.children[1] as HTMLElement}
+														container={containerElement}
 													>
 														<Chat ref={this.chatRef} {...this.initialChatProps} />
 													</DialogProvider>
diff --git a/src/components/chat-view/McpHubView.tsx b/src/components/chat-view/McpHubView.tsx
index b56a823..ecce6c3 100644
--- a/src/components/chat-view/McpHubView.tsx
+++ b/src/components/chat-view/McpHubView.tsx
@@ -273,6 +273,11 @@ const McpHubView = () => {
 						</div>
 					) : (
 						mcpServers.map(server => {
+							// Add null check for server object
+							if (!server || !server.name) {
+								return null;
+							}
+							
 							const serverKey = `${server.name}-${server.source || 'global'}`;
 							const isExpanded = !!expandedServers[serverKey];
 							const currentDetailTab = activeServerDetailTab[serverKey] || 'tools';
@@ -285,7 +290,7 @@ const McpHubView = () => {
 												{isExpanded ? <ChevronDown size={16} /> : <ChevronRight size={16} />}
 											</div>
 											<span className={`infio-mcp-hub-status-indicator ${server.status === 'connected' ? 'connected' : server.status === 'connecting' ? 'connecting' : 'disconnected'} ${server.disabled ? 'disabled' : ''}`}></span>
-											<h3 className="infio-mcp-hub-name">{server.name.replace('infio-builtin-server', 'builtin')}</h3>
+											<h3 className="infio-mcp-hub-name">{server.name ? server.name.replace('infio-builtin-server', 'builtin') : 'Unknown Server'}</h3>
 										</div>
 
 										<div className="infio-mcp-hub-actions" onClick={(e) => e.stopPropagation()}>
@@ -352,7 +357,7 @@ const McpHubView = () => {
 											<div className="infio-mcp-tab-content">
 												{currentDetailTab === 'tools' && (
 													<div className="infio-mcp-tools-list">
-														{(server.tools && server.tools.length > 0) ? server.tools.map(tool => <ToolRow key={tool.name} tool={tool} />) : <p className="infio-mcp-empty-message">{t('mcpHub.noTools')}</p>}
+														{(server.tools && server.tools.length > 0) ? server.tools.filter(tool => tool && tool.name).map(tool => <ToolRow key={tool.name} tool={tool} />) : <p className="infio-mcp-empty-message">{t('mcpHub.noTools')}</p>}
 													</div>
 												)}
 												{currentDetailTab === 'resources' && (
diff --git a/src/components/chat-view/chat-input/MentionableBadge.tsx b/src/components/chat-view/chat-input/MentionableBadge.tsx
index e064fd9..c1b6093 100644
--- a/src/components/chat-view/chat-input/MentionableBadge.tsx
+++ b/src/components/chat-view/chat-input/MentionableBadge.tsx
@@ -64,7 +64,7 @@ function FileBadge({
 						className="infio-chat-user-input-file-badge-name-icon"
 					/>
 				)}
-				<span>{mentionable.file.name}</span>
+				<span>{mentionable.file?.name || 'Unknown File'}</span>
 			</div>
 		</BadgeBase>
 	)
@@ -91,7 +91,7 @@ function FolderBadge({
 						className="infio-chat-user-input-file-badge-name-icon"
 					/>
 				)}
-				<span>{mentionable.folder.name}</span>
+				<span>{mentionable.folder?.name || 'Unknown Folder'}</span>
 			</div>
 		</BadgeBase>
 	)
@@ -147,7 +147,7 @@ function CurrentFileBadge({
 						className="infio-chat-user-input-file-badge-name-icon"
 					/>
 				)}
-				<span>{mentionable.file.name}</span>
+				<span>{mentionable.file?.name || 'Unknown File'}</span>
 			</div>
 			<div className="infio-chat-user-input-file-badge-name-block-suffix">
 				{' (Current file)'}
@@ -177,7 +177,7 @@ function BlockBadge({
 						className="infio-chat-user-input-file-badge-name-block-name-icon"
 					/>
 				)}
-				<span>{mentionable.file.name}</span>
+				<span>{mentionable.file?.name || 'Unknown File'}</span>
 			</div>
 			<div className="infio-chat-user-input-file-badge-name-block-suffix">
 				{` (${mentionable.startLine}:${mentionable.endLine})`}
@@ -234,7 +234,7 @@ function ImageBadge({
 						className="infio-chat-user-input-file-badge-name-icon"
 					/>
 				)}
-				<span>{mentionable.name}</span>
+				<span>{mentionable.name || 'Unknown Image'}</span>
 			</div>
 		</BadgeBase>
 	)
diff --git a/src/core/rag/embedding.ts b/src/core/rag/embedding.ts
index 9c8c07c..897cc6a 100644
--- a/src/core/rag/embedding.ts
+++ b/src/core/rag/embedding.ts
@@ -27,6 +27,9 @@ export const getEmbeddingModel = (
 				dangerouslyAllowBrowser: true,
 			})
 			const modelInfo = GetEmbeddingModelInfo(settings.embeddingModelProvider, settings.embeddingModelId)
+			if (!modelInfo) {
+				throw new Error(`Embedding model ${settings.embeddingModelId} not found for provider ${settings.embeddingModelProvider}`)
+			}
 			return {
 				id: settings.embeddingModelId,
 				dimension: modelInfo.dimensions,
@@ -89,6 +92,9 @@ export const getEmbeddingModel = (
 				dangerouslyAllowBrowser: true,
 			})
 			const modelInfo = GetEmbeddingModelInfo(settings.embeddingModelProvider, settings.embeddingModelId)
+			if (!modelInfo) {
+				throw new Error(`Embedding model ${settings.embeddingModelId} not found for provider ${settings.embeddingModelProvider}`)
+			}
 			return {
 				id: settings.embeddingModelId,
 				dimension: modelInfo.dimensions,
@@ -151,6 +157,9 @@ export const getEmbeddingModel = (
 				dangerouslyAllowBrowser: true,
 			})
 			const modelInfo = GetEmbeddingModelInfo(settings.embeddingModelProvider, settings.embeddingModelId)
+			if (!modelInfo) {
+				throw new Error(`Embedding model ${settings.embeddingModelId} not found for provider ${settings.embeddingModelProvider}`)
+			}
 			return {
 				id: settings.embeddingModelId,
 				dimension: modelInfo.dimensions,
@@ -213,6 +222,9 @@ export const getEmbeddingModel = (
 				dangerouslyAllowBrowser: true,
 			})
 			const modelInfo = GetEmbeddingModelInfo(settings.embeddingModelProvider, settings.embeddingModelId)
+			if (!modelInfo) {
+				throw new Error(`Embedding model ${settings.embeddingModelId} not found for provider ${settings.embeddingModelProvider}`)
+			}
 			return {
 				id: settings.embeddingModelId,
 				dimension: modelInfo.dimensions,
@@ -271,6 +283,9 @@ export const getEmbeddingModel = (
 			const client = new GoogleGenerativeAI(settings.googleProvider.apiKey)
 			const model = client.getGenerativeModel({ model: settings.embeddingModelId })
 			const modelInfo = GetEmbeddingModelInfo(settings.embeddingModelProvider, settings.embeddingModelId)
+			if (!modelInfo) {
+				throw new Error(`Embedding model ${settings.embeddingModelId} not found for provider ${settings.embeddingModelProvider}`)
+			}
 			return {
 				id: settings.embeddingModelId,
 				dimension: modelInfo.dimensions,
diff --git a/src/utils/api.ts b/src/utils/api.ts
index a9bffd4..48b3c3b 100644
--- a/src/utils/api.ts
+++ b/src/utils/api.ts
@@ -1760,7 +1760,7 @@ export const GetEmbeddingProviderModelIds = (provider: ApiProvider): string[] =>
 	return Object.keys(GetEmbeddingProviderModels(provider))
 }
 // Get embedding model info for a provider and model id
-export const GetEmbeddingModelInfo = (provider: ApiProvider, modelId: string): EmbeddingModelInfo => {
+export const GetEmbeddingModelInfo = (provider: ApiProvider, modelId: string): EmbeddingModelInfo | undefined => {
 	const models = GetEmbeddingProviderModels(provider)
 	return models[modelId]
 }