The Internal Server Error message that some of you are seeing in Origin is unrelated to the other reported issues in this thread.
The Internal Server Error message is only visual and should not be blocking you from playing any games via Origin.
If you're having issues playing games via Origin, or do you get an error code, please make a separate thread about this on the Origin board or search for an already created thread about the issue that you're experiencing.
I got "Internal Server Error" at the bottom of the screen too, and something else:
The prices seem to be missing for Battlefield 1 and NFS Deluxe Edition.
It does not seem to affect accessing the games library.
@EA_Leeuw That only appears on the "My Home" tab of the Origin client. That must have something to do with the website because I tried loading the Origin site in this browser and there are also visible error messages there too.