fix: 非openai 渠道使用 SystemPrompt 设置会panic

relay/compatible_handler.go

@@ -90,7 +90,8 @@ func TextHelper(c *gin.Context, info *relaycommon.RelayInfo) (newAPIError *types
 
 		if info.ChannelSetting.SystemPrompt != "" {
 			// 如果有系统提示，则将其添加到请求中
-			request := convertedRequest.(*dto.GeneralOpenAIRequest)
+			request, ok := convertedRequest.(*dto.GeneralOpenAIRequest)
+			if ok {
 				containSystemPrompt := false
 				for _, message := range request.Messages {
 					if message.Role == request.GetSystemRoleName() {
@@ -127,6 +128,7 @@ func TextHelper(c *gin.Context, info *relaycommon.RelayInfo) (newAPIError *types
 					}
 				}
 			}
+		}
 
 		jsonData, err := common.Marshal(convertedRequest)
 		if err != nil {