Pls I want to know why am not able to pass tests 10, 11, 12 and 13

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Describe your issue in detail here.
I don’t know why my code is not passing tests 10, 11, 12 and 13 yet the app seems to function properly.

Blockquote
Here is my solution link
boilerplate-project-metricimpconverter - Replit

Your project link(s)

solution: boilerplate-project-metricimpconverter - Replit

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Challenge: Metric-Imperial Converter

Link to the challenge: