In some cases (when there are no faces for example, the offsets span can have a size of 1 but no data). That's technically invalid and might need to be addressed more later on, but for now, just fix the assert.
In some cases (when there are no faces for example, the offsets span can have a size of 1 but no data). That's technically invalid and might need to be addressed more later on, but for now, just fix the assert.