[SUPPORT]CAMERA 360 v2. System

Hello,
Thanks for amazing plugin. Love it!
One question - I am using 6Task solution - looks brilliant, no seams, but I always get the stitch at the back (a line from sky to the ground in the back ) Rendering 8000x4000 as a output. How to stitch correctly? ( I was following - Tutorial 6. Electric Dreams ENV asset. Learning the plugin Camera360v2.)