how to Custom error messages ？

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Bug Description:
{A clear and concise description of what the bug is}

Expected Behavior:
{A clear and concise description of what you expected to happen}
i want to Custom error messages to chinese？
Code Fragment:
{If possible, copy code fragment that caused a bug}

# Code...

Error Fragment:
{If possible and if error occurred copy error message}

# Error Message...

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Anyone willing to contribute please review CONTRIBUTING.md for more details 💯