The problem of evil in pantheism or panentheism can be different from a personal sovereign god. For the personal god, god would allow evil. In Pantheism God is everything so god would also be the diseases so the problem is more than just allowing or creating evil.
I have found that pantheism have similar ideas found in Hinduism and Buddhism, and I have found Hindu's explain away the problem of evil by calling it an illusion.
Another alternative to me is that in pantheism the problem of evil isn't just a problem for humans. It is a problem for god. So if evil happens and suffering happens then god is suffering and not in an illusion sense. With god not being personal it is hard to say how this suffering would be at a universal level. In pantheism, with everything being god, then the gods are at each other trying to implement their will, whether it is another human or a disease trying to catch us off guard. The power to eliminate suffering is within everything and so the problem of evil is addressed within everything. A pantheist god isn't the sort of god that snaps his fingers and makes everything ok. When everything is potentially god then everything and everyone have a hand in creating or illuminating evil and the universal god ends up at it's own mercy.
I have found that pantheism have similar ideas found in Hinduism and Buddhism, and I have found Hindu's explain away the problem of evil by calling it an illusion.
Another alternative to me is that in pantheism the problem of evil isn't just a problem for humans. It is a problem for god. So if evil happens and suffering happens then god is suffering and not in an illusion sense. With god not being personal it is hard to say how this suffering would be at a universal level. In pantheism, with everything being god, then the gods are at each other trying to implement their will, whether it is another human or a disease trying to catch us off guard. The power to eliminate suffering is within everything and so the problem of evil is addressed within everything. A pantheist god isn't the sort of god that snaps his fingers and makes everything ok. When everything is potentially god then everything and everyone have a hand in creating or illuminating evil and the universal god ends up at it's own mercy.