Show the actual error in login error toast

[Efefefef]

Description of the problem

Sometimes tests are failing because of some connection error
It is scary and uncertain what was the actual error

Suggested solution

Would be helpful to show the error to know if it is a typo or too many requests or server is down
And its not bad to show more verbous message to the user

[4fryn]

+1 yes please :)

[michaeltomasik]

I have an issue related to this #1274

[slaweet]

Specification

• If the response contains an error message, then it should say Unable to connect to the node, Error: {message}, Status code: {code}
• If the response doesn't contain an error message, then it should say Unable to connect to the node, Status code: {code}
• If no response, then it should say Unable to connect to the node, no response from the server.