Not quite sure why you commented "I am a single earner"---are you the only parent the child lives with? Are you filing single or head of household? If you are filing a joint return then both spouses need to show earned income unless one is a student or disabled. If you are filing married filing separately you will not be able to get the childcare credit.
https://ttlc.intuit.com/questions/1900643-what-is-the-child-and-dependent-care-credit
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