I can understand that you use "Find Persons" in the Find app, together with your husband.
Start by deleting and adding each other again.
1 Open the Find app on your iPhone
2 Tap "People" in the bottom bar
3 Find your husband and delete him by swiping from right to left.
4 Wait a bit and add him again.
Remember to invite him to his Apple ID email, and remember to select "Always Share" When your husband receives the invitation, accept it and also remember to select "Always Share" on his phone.
Also check that you both have location service activated. Go to:
Settings > Privacy > Location Service > enable.
Also look for Find app in the list below, it must also be enabled.
Find more information about Find Persons here:
Find people and share your location with Find My - Apple Support