This means that an error whose type we can't identify was raised from the other side.

Method __init__ Create a remote error with an error code and description.
def __init__(self, description): (source)

Create a remote error with an error code and description.

ParameterserrorCodethe AMP error code of this error. (type: bytes)
descriptionsome text to show to the user. (type: str)
fatala boolean, true if this error should terminate the connection.
locala local Failure, if one exists.
API Documentation for Twisted, generated by pydoctor at 2018-10-15 19:29:43.