Why this code execute always "else statement 'Invalid username" when i enter valid username it also execute invalid username

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main.rs
main.rs1920×1080 173 KB

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  1. It'd be better if you copied your code, not screenshot, since we could the copy it to our editor and test it ourselves.
  2. You're doing to_lowercase on the input, but neither of the valid user names is in lowercase.
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yes i got it, appreciate your help thank u
i was thinking on this issue for two hours

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