=iferror((e60-d60)/d60,0)

Hi, I am getting these errors. Can somebody point out what is causing these errors?

Monthly Growth=IFERROR((D19-C19)/C19,0)
Average LTV =IFERROR(D46/D44,0)
Growth =IFERROR((E60-D60)/D60,0)
Expected New Customers Added=IFERROR(D37/D71,0)
Lost Customers=IFERROR(ROUND(C88*D83,0),0)
Total Customers=IFERROR(D86-D87+C88,D86)
Growth=IFERROR((D135-C135)/C135,0)
Growth =IFERROR((D140-C140)/C140,0)
Expected Leads Added via Ads=IFERROR(ROUNDDOWN(D38/D148,0),0)