Wrong error message when no tag is added

[cleowenxuan]

As seen in the screenshot, when no tag is added, the error command shown is invalid. In the screenshot below, it shows that "Tag names should be alphanumeric". However, the correct error should be to specify that there should at least be one input for the tags section. This is to ensure that users can identify what is wrong with the command that they have input in.

[nus-pe-script]

Your response not required for this bug as the team has accepted the bug as it is.