🗃️ fix: revise RAG prompt (#3006)

api/app/clients/prompts/createContextHandlers.js

@@ -8,8 +8,6 @@ In your response, remember to follow these guidelines:
 - If you don't know the answer, simply say that you don't know.
 - If you are unsure how to answer, ask for clarification.
 - Avoid mentioning that you obtained the information from the context.
-
-Answer appropriately in the user's language.
 `;
 
 function createContextHandlers(req, userMessageContent) {
@@ -94,7 +92,10 @@ function createContextHandlers(req, userMessageContent) {
 
       const resolvedQueries = await Promise.all(queryPromises);
 
-      const context = resolvedQueries
+      const context =
+        resolvedQueries.length === 0
+          ? '\n\tThe semantic search did not return any results.'
+          : resolvedQueries
             .map((queryResult, index) => {
               const file = processedFiles[index];
               let contextItems = queryResult.data;