Trouble reading CIF

https://ambermd.org/tutorials/basic/tutorial5/files/CRO.cif

Gives the following error:
```
> parm CRO.cif 
  [parm CRO.cif]
	Reading 'CRO.cif' as CIF File
Error: CIF data block '_atom_site' not found.
Error reading topology file 'CRO.cif'
Error: Could not open topology 'CRO.cif'
```