Merge pull request #1134 from yileicn/master

optimize GetAgents

Author: yileicn

src/Infrastructure/BotSharp.Core/Agents/Services/AgentService.GetAgents.cs

@@ -44,17 +44,18 @@ public async Task<List<IdName>> GetAgentOptions(List<string>? agentIdsOrNames, b
     [SharpCache(10)]
     public async Task<Agent> GetAgent(string id)
     {
-         if (string.IsNullOrWhiteSpace(id))
-         {
-             return null;
-         }
-
-         var profile = _db.GetAgent(id);
-         if (profile == null)
-         {
-             _logger.LogError($"Can't find agent {id}");
-             return null;
-         }
+        if (string.IsNullOrWhiteSpace(id) || id == Guid.Empty.ToString())
+        {
+            _logger.LogWarning($"Can't find agent {id}, AgentId is empty.");
+            return null;
+        }
+
+        var profile = _db.GetAgent(id);
+        if (profile == null)
+        {
+            _logger.LogError($"Can't find agent {id}");
+            return null;
+        }
 
         // Load llm config
         var agentSetting = _services.GetRequiredService<AgentSettings>();