Your Operating system and DeepLabCut version

Please state your operating system, env, and which version of DeepLabCut you are using.
Example: Ubuntu 16.04 LTS, with an Anaconda Env, & DeepLabCut1.x or 2.x.

Describe the problem

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How to Reproduce the problem
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1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Screenshots
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Additional context
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