You have a Pi 3A, which has only 512 MB of RAM. Looks like it doesn’t have enough memory to operate:
Aug 23 16:12:33 melpomene mediacenter[318]: Mesa: User error: GL_OUT_OF_MEMORY in VBO allocation
Aug 23 16:12:33 melpomene mediacenter[318]: ../src/mesa/vbo/vbo_exec_api.c:1014:vbo_exec_vtx_init: Assertion `exec->vtx.buffer_ptr' failed.
Aug 23 16:12:33 melpomene kernel: [drm:vc4_bo_create [vc4]] *ERROR* Failed to allocate from CMA:
Aug 23 16:12:33 melpomene kernel: vc4-drm soc:gpu: [drm] dumb: 4500kb BOs (1)
Aug 23 16:12:33 melpomene kernel: vc4_v3d 3fc00000.v3d: Failed to allocate memory for tile binning: -12. You may need to enable CMA or give it more memory.