Bug Fix: PVRTC format and Metal Graphics API
[MTLTextureDescriptorInternal validateWithDevice:], line 913: error ‘MTLTextureDescriptor has a PVRTC pixel format (MTLPixelFormatPVRTC_RGBA_4BPP) set with non-square and/or non-power of two dimensions.’
Turns out that Metal Graphics API causes this error. The solution is to:
1. Go to File > Build Settings > Other Settings
Many thanks to Bilelmnasser for the answer proposed in this forum post!