From 98706d429c6acd22a725d2c3df5c10b89643239f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Aleix=20Conchillo=20Flaqu=C3=A9?= <aleix@daily.co>
Date: Fri, 21 Feb 2025 10:12:54 -0800
Subject: [PATCH] LLMUserContextAggregator: make sure incoming transcription
 has text

---
 src/pipecat/processors/aggregators/llm_response.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/pipecat/processors/aggregators/llm_response.py b/src/pipecat/processors/aggregators/llm_response.py
index 017973fda..ae0b23507 100644
--- a/src/pipecat/processors/aggregators/llm_response.py
+++ b/src/pipecat/processors/aggregators/llm_response.py
@@ -293,7 +293,13 @@ class LLMUserContextAggregator(LLMContextResponseAggregator):
             await self.push_aggregation()
 
     async def _handle_transcription(self, frame: TranscriptionFrame):
-        self._aggregation += f" {frame.text}" if self._aggregation else frame.text
+        text = frame.text
+
+        # Make sure we really have some text.
+        if not text.strip():
+            return
+
+        self._aggregation += f" {text}" if self._aggregation else text
         # We just got a final result, so let's reset interim results.
         self._seen_interim_results = False
         # Reset aggregation timer.