Every time I log in to my pokemon home it closes due to an error. When I access the boxes for pokemon home It runs fine, but when I try to Access my pokemon shield from it it keep closing. I tried to restart my system but it did not help. I even deleted the Software and re installed it but that did not help either.
I'm not overly familiar with Apple products myself but if I'm not mistaken Error Code 0 is a storage issue. How old is your phone? It might be that the storage is going bad on your phone but a new update with HOME is the only app that triggers the issue. If it's a relatively new phone then I'm not sure other than trying to uninstall and reinstall as bobandbill said. Resetting to factory default is also an option but I doubt you'd be willing to do that just for Pokemon HOME.