I know that tantrums are basically normal for children however my 1 year old will consistently keep…

I know that tantrums are basically normal for children however my 1 year old will consistently keep crying and it can go on for an hour straight at the most!! I did not experience this with my son so i am completely lost disciplining her only intensifies it And I've tried a soft approach as well is this just a phase?? Any suggestions I'm clueless!