Fix error message rendering in khoj.el, khoj obsidian chat

- Fix failed to index error message in khoj.el
- Fix chat model not configured message in khoj obsidian chat

src/interface/obsidian/src/chat_modal.ts

@@ -245,7 +245,7 @@ export class KhojChatModal extends Modal {
             if (responseJson.detail) {
                 // If the server returns error details in response, render a setup hint.
                 let setupMsg = "Hi 👋🏾, to start chatting add available chat models options via [the Django Admin panel](/server/admin) on the Server";
-                this.renderMessage(chatBodyEl, setupMsg, "khoj", undefined, true);
+                this.renderMessage(chatBodyEl, setupMsg, "khoj", undefined);
 
                 return false;
             } else if (responseJson.response) {

src/khoj/routers/api.py

@@ -55,7 +55,7 @@ from khoj.search_filter.file_filter import FileFilter
 from khoj.search_filter.word_filter import WordFilter
 from khoj.search_type import image_search, text_search
 from khoj.utils import constants, state
-from khoj.utils.config import GPT4AllProcessorModel, TextSearchModel
+from khoj.utils.config import GPT4AllProcessorModel
 from khoj.utils.helpers import (
     AsyncIteratorWrapper,
     ConversationCommand,