I am also experiencing the same issue - after reading through many previous forum posts regarding graphics & driver issues with the OPi3LTS I wasn't able to turn anything up.
I've been trying to troubleshoot as best as possible over the last week or so and I haven't had any success - I don't have a lot of experience in this space so I'm pretty much starting from scratch myself.
Any assistance at all would be appreciated, even a nudge toward some documentation for the Panfrost driver that might have further info regarding this error code.
