fix: error handling

src/routes/(app)/+page.svelte

@@ -133,6 +133,10 @@
 			selectedModels = [''];
 		}
 
+		selectedModels = selectedModels.map((modelId) =>
+			$models.map((m) => m.id).includes(modelId) ? modelId : ''
+		);
+
 		let _settings = JSON.parse(localStorage.getItem('settings') ?? '{}');
 		settings.set({
 			..._settings
@@ -151,6 +155,10 @@
 	const submitPrompt = async (userPrompt, _user = null) => {
 		console.log('submitPrompt', $chatId);
 
+		selectedModels = selectedModels.map((modelId) =>
+			$models.map((m) => m.id).includes(modelId) ? modelId : ''
+		);
+
 		if (selectedModels.includes('')) {
 			toast.error('Model not selected');
 		} else if (messages.length != 0 && messages.at(-1).done != true) {
@@ -282,6 +290,7 @@
 			selectedModels.map(async (modelId) => {
 				const model = $models.filter((m) => m.id === modelId).at(0);
 
+				if (model) {
 					// Create response message
 					let responseMessageId = uuidv4();
 					let responseMessage = {
@@ -310,8 +319,9 @@
 						await sendPromptOpenAI(model, prompt, responseMessageId, _chatId);
 					} else if (model) {
 						await sendPromptOllama(model, prompt, responseMessageId, _chatId);
+					}
 				} else {
-					toast.error(`Model ${model.id} not found`);
+					toast.error(`Model ${modelId} not found`);
 				}
 			})
 		);