Well I’ve just registered to post this, so it may help someone out there one day.
After losing tons of time and valuable life energy on the famous unknown error during encoding process, I’ve realized that premiere was generating a blank (black) frame on some clips that I’ve applied Warp Stabilization.
This had never happened before on any other projects before, and I truly did not have the energy to find out why.
But! It was easily fixed by simply trimming the clip by a frame or two, getting rid of those spooky frames of void!
I was able to render my clip, and now I can sleep. Thanks for previous suggestions by the way, those were useful, and directed me to the right direction anyways.