February 2017 - last edited January 2020
There can be a number of reasons for an unspecified error , now the steps below are a cover all so you may not need to do all of them but are worthwhile following.
If that alone fails follow this approach
If all this fails wait say 24 hours and retry the steps again , if still not resolved then make a new post in this forum.
One last option is to install as non streaming as this error is streaming specific but be aware it involves a new game install