SUMIF with "=" condition giving #NAME! error

SUMIF with "=" condition giving #NAME! error

I have =SUMIF(H21:H27;=&B55;I21:I27) which is throwing an error. Have tried =SUMIF(H21:H27;=B55;I21:I27), =SUMIF(H21:H27;"="&"B55";I21:I27) and =SUMIF(H21:H27;"=B55";I21:I27)