Did Kamala Harris work at a McDonald's? Why does it matter?

Republicans accuse Kamala Harris of fabricating her first employment at McDonald's, saying that it was not mentioned on her 1987 resume for a law clerk job. They claim this information remained missing from all aspects of Harris' life, from her biographies too until she ran for president in 2019. Democrats dismiss the claim and said it was just a summer job -- not worthy to find its place in the CV.