Error comeback from time to time, it's always after daily reset, not everyday, when logging in first time, error popup when it tries to open announcements after collecting daily rewards.
Not a big deal, retries and turning off and on internet always fix it, force close + clearing cache doesn't seem to always fix but can work too.
it skips the opening announcements process, then game run fine for at least a day i guess, couple days more likely, maybe until new changes in announcements?