If I don't have a income when I was away from Canada, how can I should fill the part of income from canadian sources?

[jinyo]

I was student when I was away from Canada, so I filled the '0' in income from foreign sources. But it keeps showed me the error, so I couldn't go to the next step. How can I fixed the error or warnings? it keeps tell me to fill the income

[TurboTaxJennifer]

If you haven't entered your Canadian income from employment, etc. return to the T4 section and enter any slips you have. Use the Find button to search/select T slips.