Traceback (most recent call last):


 "test.py", line 21, in <module>

aladin = niftyreg.RegAladin()


 "/Users/x/miniconda3/lib/python3.8/site-packages/nipype/interfaces/niftyreg/base.py", line 66, in __init__

_version = self.version


 "/Users/x/miniconda3/lib/python3.8/site-packages/nipype/interfaces/niftyreg/base.py", line 117, in version

return Info.version()


 "/Users/x/miniconda3/lib/python3.8/site-packages/nipype/interfaces/base/core.py", line 1119, in version

clout = CommandLine(


 "/Users/x/miniconda3/lib/python3.8/site-packages/nipype/interfaces/base/core.py", line 419, in run

runtime = self._run_interface(runtime)


 "/Users/x/miniconda3/lib/python3.8/site-packages/nipype/interfaces/base/core.py", line 814, in _run_interface

self.raise_exception(runtime)


 "/Users/x/miniconda3/lib/python3.8/site-packages/nipype/interfaces/base/core.py", line 741, in raise_exception

raise RuntimeError(
RuntimeError: Command:

Traceback (most recent call last):

 "/usr/lib/python3/dist-packages/pip/basecommand.py", line 209, in main
status = self.run(options, args)

 "/usr/lib/python3/dist-packages/pip/commands/install.py", line 317, in run
requirement_set.prepare_files(finder)

 "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 360, in prepare_files
ignore_dependencies=self.ignore_dependencies))

 "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 448, in _prepare_file
req_to_install, finder)

 "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 387, in _check_skip_installed
req_to_install.check_if_exists()

 "/usr/lib/python3/dist-packages/pip/req/req_install.py", line 1011, in check_if_exists
self.req.project_nameAttributeError: 'Requirement' object has no attribute 'project_name'