Error message on wrong address stays

[regisoc]

Describe the bug

When trying to use the Import data into LORIS toggle, missing one authentication prints an error message that stays even if the next tentative is successful. Not critical, but can confuse the user.

To Reproduce
Steps to reproduce the behavior (attach screenshots if applicable):

1. Use set2bids branch
2. toggle on the Import data into LORIS
3. enter a wrong address (I did not include the protocol used - https://) to connect to an existing LORIS instance
4. See error
5. Change the address to the right one (include the protocol - https://)
6. See the right connection and the error message

What did you expect to happen?

When the connection is established, no error message should be on-screen (maybe a temporary message).

[christinerogers]

this is a "one-shot login" bug :)