Error when using IBMQ.load_accounts()

Information

• Qiskit Terra version: 0.8.0
• Python version: 3.7.1
• Operating system: Windows 10 x64

What is the current behavior?

After registering for the beta version of IBM Q Experience my credentials no longer loaded using the command IBMQ.load_accounts()

Steps to reproduce the problem

1. Sign in the beta version of IBM Q Experience;
2. Generate a new token at the beta version;
3. Try to load the account using: IBMQ.load_accounts()

What is the expected behavior?

>>> from qiskit import IBMQ
>>> IBMQ.load_accounts()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\ProgramData\Anaconda3\envs\quantum_env\lib\site-packages\qiskit\providers\ibmq\ibmqprovider.py", line 199, in load_accounts
    self._append_account(credentials)
  File "C:\ProgramData\Anaconda3\envs\quantum_env\lib\site-packages\qiskit\providers\ibmq\ibmqprovider.py", line 279, in _append_account
    single_provider = IBMQSingleProvider(credentials, self)
  File "C:\ProgramData\Anaconda3\envs\quantum_env\lib\site-packages\qiskit\providers\ibmq\ibmqsingleprovider.py", line 52, in __init__
    self._api = self._authenticate(self.credentials)
  File "C:\ProgramData\Anaconda3\envs\quantum_env\lib\site-packages\qiskit\providers\ibmq\ibmqsingleprovider.py", line 103, in _authenticate
    .format(ex)) from root_exception
ConnectionError: Couldn't connect to IBMQ server: error during login: License required. You need to accept the License from Web Platform. https://quantumexperience.ng.bluemix.net

Suggested solutions

I tested the following steps before I could solve the problem:

1. Accept the license using the link provided by the error;
2. Delete the accounts registered in qiskit with the command: IBMQ.delete_accounts()
3. Create a second token in the beta version of IBMQ and try to load;

But this worked:

1. I went back to the old version of IBM Q Experience and noticed that my token was as “NULL”. After generating a new token, everything worked again, using the following steps in python:

from qiskit import IBMQ
IBMQ.delete_accounts()
IBMQ.save_account('MY-NEW_TOKEN')
IBMQ.load_accounts()

[jwoehr]

Error when using IBMQ.load_accounts() #122 is a Qiskit documentation query.

from qiskit import IBMQ
IBMQ.save_account('MY_API_TOKEN', 'MY_URL')

These are the directions a https://qiskit.org/documentation/install.html#install-access-ibm-q-devices-label

But the typical existing free access Qiskit user never thinks about the URL.

The idea that they have to click a “Copy URL” button and explicitly choose the beta site so their authentication will match is a new concept and needs to be documented better for existing users.

The URL for IBM QE Beta can be obtained from the copy url button on https://quantum-computing.ibm.com/account

The value is set to https://api.quantum-computing.ibm.com/api/Hubs/ibm-q/Groups/open/Projects/main .

The desired result is always obtained by a full invocation of save_account('mytoken', 'https://api.quantum-computing.ibm.com/api/Hubs/ibm-q/Groups/open/Projects/main')

[jwoehr]

@big-c-note if you encounter problems you can chat on https://qiskit.slack.com in #general