How can I get my child to sleep through the night?

Does anyone have some good advice on getting children to sleep through the night. My daughter just turned 14 months and she had been doing well enough sleeping through the night she would stay up fairly late and wake up early but we all got solid sleep. For the last 3 weeks she been waking up 2-3 times a night screaming like a wild baby. Ive tried night lights but she wont sleep if she sees light. I told my husbad that as long as she knows we’ll come running she’ll just keep doing it so ive been try to let her cry it out for the last 2 days and that just makes it worse because ahe is so stubborn. My son, my husband, and myself are all running pretty ragged. so I would love some tips to try.