Command start with a space can not be recognised

[nus-pe-bot]

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_{[original: nus-cs2113-AY2223S1/pe-interim#913] [original labels: severity.Medium type.FunctionalityBug]}

[Zhai-Yuxin]

Team's Response

The input shouldn't start with spacing.

It is invalid input.

Duplicate status (if any):

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