Merge pull request #1042 from JackJiang1234/master

Update AgentService.GetAgents.cs

Author: yileicn

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

@@ -44,13 +44,17 @@ public async Task<List<IdName>> GetAgentOptions(List<string>? agentIdsOrNames, b
     [SharpCache(10)]
     public async Task<Agent> GetAgent(string id)
     {
-        var profile = _db.GetAgent(id);
+         if (string.IsNullOrWhiteSpace(id))
+         {
+             return null;
+         }
 
-        if (profile == null)
-        {
-            //_logger.LogError($"Can't find agent {id}");
-            throw new ArgumentException($"Can't find agent {id}");
-        }
+         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>();