The cacti 1.2.12 unable to log in after fresh install
I’m unable to log in my cacti a few days later after fresh install the cacti version 1.2.12, I share a workaround to solve this problem between waiting for an update to the next release.

I’m unable to log in to my cacti. The last week I just fresh install the cacti version 1.2.12 on ubuntu 20.04. Everything looking fine but when I try to log in but it sticks on the log in page.
I’m sure my username and password are correct. So I’m searching on the google I found the related issues here. But It still can not help me to solve my problem. So I try to do this way by myself. It just a workaround to solve this problem. Between waiting they release an update to fix this bug.
I’m always using a chrome browser. When I want to log in to my cacti I have to clear the cookie of my cacti site.
Right-Click in chrome browser and select an Inspect.

Next step select the application tab and in the left panel click on Cookies. Delete all cookies on the right panel.Sometimes I found 3 cookies, So delete it all.

After clear all cookies try to close your web browser and re-open it again. Now you can log in to your cacti.
I hope this workaround is useful for everyone.