Glitchy modx and phpthumbof. Why do pictures increase in size, and when you try to change something in this world, do errors appear in the logs?

Question

MODX

Guys, what should I do if phpthumbof starts displaying such rubbish instead of normal png images without a background? I tried to reinstall the phpthumbof package - it ended badly, after the reinstallation it stopped working completely, and in the log there are a lot of errors referring to xpdo and phpthumb. And another question - the picture weighs 60 kb, after processing phpthumbof it weighs several times more, from 200 to 600 kb, how can this be solved? The "quality" parameter - q, does not work at all.
I set the rotation by 1 degree - ra=1, the display returned to normal, but the crutch is not the case. In addition, rotation, except for the above effect, does nothing else, set at least 30 degrees, at least 300