Inconsistency in error messages

[jellymias]

In history mode, start gives this error message, while tag and deleteTag give invalid format command messages when only the command word is used. Perhaps this can be fixed in future updates?

[nus-pe-bot]

Team's Response

No response provided.

The 'Original' Bug

[The team marked this bug as a duplicate of the following bug]

Wrong exception thrown in the main window

instead of "Tagging and deletion of tags can only be done in learn mode!"

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_{[original: nus-cs2103-AY2021S2/pe-interim#3048] [original labels: severity.Low type.FunctionalityBug]}

Their Response to the 'Original' Bug

[This is the team's response to the above 'original' bug]

The command itself is invalid: if the user types in a valid tag command at that stage, the error message for being in the wrong mode will then show.

This is because having an invalid command holds a higher priority over being in the wrong mode.

Items for the Tester to Verify

❓ Issue duplicate status

Team chose to mark this issue as a duplicate of another issue (as explained in the Team's response above)

• I disagree

Reason for disagreement: [replace this with your reason]

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❓ Issue response

Team chose [response.Rejected]

• I disagree

Reason for disagreement: [replace this with your reason]

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❓ Issue type

Team chose [type.FunctionalityBug]
Originally [type.DocumentationBug]

• I disagree

Reason for disagreement: [replace this with your reason]

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❓ Issue severity

Team chose [severity.Low]
Originally [severity.VeryLow]

• I disagree

Reason for disagreement: [replace this with your reason]

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