Fix null ref issue in query method and update logic for determining whether khoj is already configured in obsidian

src/interface/obsidian/src/utils.ts

@@ -55,6 +55,7 @@ export async function configureKhojBackend(vault: Vault, setting: KhojSetting, n
     await request(khoj_already_configured ? khojConfigUrl : `${khojConfigUrl}/default`)
         .then(response => JSON.parse(response))
         .then(data => {
+            khoj_already_configured = data["content-type"] != null;
             // If khoj backend not configured yet
             if (!khoj_already_configured) {
                 // Create khoj content-type config with only markdown configured

src/khoj/search_type/text_search.py

@@ -126,6 +126,14 @@ async def query(
     dedupe: bool = True,
 ) -> Tuple[List[dict], List[Entry]]:
     "Search for entries that answer the query"
+    if (
+        content.entries is None
+        or len(content.entries) == 0
+        or content.corpus_embeddings is None
+        or len(content.corpus_embeddings) == 0
+    ):
+        return [], []
+
     query, entries, corpus_embeddings = raw_query, content.entries, content.corpus_embeddings
 
     # Filter query, entries and embeddings before semantic search