diff --git a/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/ChatApiService.kt b/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/ChatApiService.kt
index 1431295de..4823653ef 100644
--- a/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/ChatApiService.kt
+++ b/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/ChatApiService.kt
@@ -589,7 +589,7 @@ class ChatApiService(private val context: android.content.Context? = null) : Cor
                     val functionName = firstToolCall.name
                     val argumentsJson = firstToolCall.arguments
                     var isError = false
-                    val errorText = ""
+                    var errorText = ""
                     val result = if (_mcpClient?.hasToolWithName(functionName) == true) {
                         // 解析参数，如果参数为空JSON对象，使用空Map
                         val arguments = if (argumentsJson == "{}") {