(30)tensorboard ValueError: Duplicate plugins for name projector

问题描述：之前用的好好的，训练的时候打开tensorboard报错tensorboard ValueError: Duplicate plugins for name projector，完整错误如下：

Traceback (most recent call last):
  File "/home/.conda/envs/ultralytics_yolov3/bin/tensorboard", line 8, in 
    sys.exit(run_main())
  File "/home/.conda/envs/ultralytics_yolov3/lib/python3.7/site-packages/tensorboard/main.py", line 46, in run_main
    app.run(tensorboard.main, flags_parser=tensorboard.configure)
  File "/home/.conda/envs/ultralytics_yolov3/lib/python3.7/site-packages/absl/app.py", line 300, in run
    _run_main(main, args)
  File "/home/.conda/envs/ultralytics_yolov3/lib/python3.7/site-packages/absl/app.py", line 251, in _run_main
    sys.exit(main(argv))
  File "/home/.conda/envs/ultralytics_yolov3/lib/python3.7/site-packages/tensorboard/program.py", line 276, in main
    return runner(self.flags) or 0
  File "/home/.conda/envs/ultralytics_yolov3/lib/python3.7/site-packages/tensorboard/program.py", line 292, in _run_serve_subcommand
    server = self._make_server()
  File "/home/.conda/envs/ultralytics_yolov3/lib/python3.7/site-packages/tensorboard/program.py", line 481, in _make_server
    deprecated_multiplexer,
  File "/home/.conda/envs/ultralytics_yolov3/lib/python3.7/site-packages/tensorboard/backend/application.py", line 145, in TensorBoardWSGIApp
    experimental_middlewares,
  File "/home/.conda/envs/ultralytics_yolov3/lib/python3.7/site-packages/tensorboard/backend/application.py", line 253, in __init__
    "Duplicate plugins for name %s" % plugin.plugin_name
ValueError: Duplicate plugins for name projector

分析：查阅资料说是安装了多个版本的tensorboard，需要删除一个tensorboard--2.0.0dist-info ，但在ubuntu环境下无法直接打开文件夹去找这个文件夹，于是只能查看环境安装列表，然后尝试删除。

（1）执行conda list，发现果然该环境中安装了两个tensorboard，如下图所示：

尝试卸载一个，使用pip或者conda分别尝试卸载2.3.0和2.5.0版本的tensorboard，留下其中一个都没用 ，但是介于tensorflow是pip安装的，因此使用conda卸载2.3.0的tensorboard，留下2.5.0的。

（2）pip卸载tensorboard 2.5.0重新安装，安装了2.7.0，仍然报同样的错误。

（3）pip uninstall tb-nightly，卸载tb-nightly，执行tensorboard --logdir=logs/logs_1，报错：

bash: /home/.conda/envs/ultralytics_yolov3/bin/tensorboard: 没有那个文件或目录

（4）使用pip卸载tensorboard，重新安装。问题解决！

参考：tensorboard ValueError: Duplicate plugins for name projector_Avada_533的博客-CSDN博客

[报错] [TensorBoard] [TensorFlow] ValueError: Duplicate plugins for name projector_Xovee-CSDN博客