Django 3.0.2 can not install

[mindjourney.wang]

pip install django-cors-headers
Collecting django-cors-headers
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x110afd1d0>: Failed to establish a new connection: [Errno 61] Connection refused')': /simple/django-cors-headers/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x110aef550>: Failed to establish a new connection: [Errno 61] Connection refused')': /simple/django-cors-headers/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x110aef7d0>: Failed to establish a new connection: [Errno 61] Connection refused')': /simple/django-cors-headers/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x110aef6d0>: Failed to establish a new connection: [Errno 61] Connection refused')': /simple/django-cors-headers/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x110aef990>: Failed to establish a new connection: [Errno 61] Connection refused')': /simple/django-cors-headers/
Could not find a version that satisfies the requirement django-cors-headers (from versions: )
No matching distribution found for django-cors-headers

[Adam Johnson]

That's just pip being unable to connect to PyPI. Try again, check PyPI isn't down.