>>50487same dude who posted about ublock origin
anyways, when i was having login errors, i scrambled to find out what the fuck was causing it, and apparently, it was ublock origin. all i had to do was either whitelist kemono entirely (temporarily), or turn ublock off (again, temporarily) and try logging in, and it worked.
but since you say it wasn't an adblock/ublock issue, can i assume you tried it and got the same error anyway?