Upgrade from 3.4.6 to 4.1.0 - fields missing - Redmine

Upgrade from 3.4.6 to 4.1.0 - fields missing

Hello,

i upgraded redmine from 3.4.6 to 4.1.0 and I have missing fields in my issues form

the version, ratio and estimated time fields are missing.

I do not know why. Any ideas?

thanks in advance

I found the solution to my problem

Fields were not selected in the administration of trackers

(1-1/1)