I cannot access the cPanel with the server root user

Root user credentials work when I enter the WHM but when I use them the cPanel does not work for me, I have already tried everything, I have already checked the login_log, I already made stopcphulkd, and nothing :( it should be clarified that it is the first time I have entered cPanel after having installed it, it is strange because if I can enter the WHM, I appreciate the help you can give me. Greetings and stay tuned