Update qq group qrcode in README_zh-CN.md (#8370)

* [Fix]: Fix WandbLogger Hook Error (#8273) * Delete qq_group_qrcode.jpg * Update README_zh-CN.md Co-authored-by: Ayush Thakur <mein2work@gmail.com>
open-mmlab · Jul 22, 2022 · 0f57742 · 0f57742
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diff --git a/README_zh-CN.md b/README_zh-CN.md
@@ -359,10 +359,10 @@ MMDetection 是一款由来自不同高校和企业的研发人员共同参与
 
 ## 欢迎加入 OpenMMLab 社区
 
-扫描下方的二维码可关注 OpenMMLab 团队的 [知乎官方账号](https://www.zhihu.com/people/openmmlab)，加入 OpenMMLab 团队的 [官方交流 QQ 群](https://jq.qq.com/?_wv=1027&k=aCvMxdr3)
+扫描下方的二维码可关注 OpenMMLab 团队的 [知乎官方账号](https://www.zhihu.com/people/openmmlab)，加入 OpenMMLab 团队的官方交流 QQ 群
 
 <div align="center">
-<img src="resources/zhihu_qrcode.jpg" height="400" />  <img src="resources/qq_group_qrcode.jpg" height="400" />
+<img src="resources/zhihu_qrcode.jpg" height="400" />  <img src="https://cdn.vansin.top/OpenMMLab/q3.png" height="400" />
 </div>
 
 我们会在 OpenMMLab 社区为大家

diff --git a/mmdet/core/hook/wandblogger_hook.py b/mmdet/core/hook/wandblogger_hook.py
@@ -135,7 +135,8 @@ def before_run(self, runner):
         super(MMDetWandbHook, self).before_run(runner)
 
         # Save and Log config.
-        if runner.meta is not None:
+        if runner.meta is not None and runner.meta.get('exp_name',
+                                                       None) is not None:
             src_cfg_path = osp.join(runner.work_dir,
                                     runner.meta.get('exp_name', None))
             if osp.exists(src_cfg_path):

diff --git a/resources/qq_group_qrcode.jpg b/resources/qq_group_qrcode.jpg