We are currently aware of an error affecting some users where they see an error page upon logging in or clicking on the taxes tab.
Please accept our apologies regarding this, and know that we have reported this to our engineering team who are currently working to resolve this issue as soon as possible.
As always, no need to worry - your current data is not lost, and we'll re-import any missed transactions from the time that this error affects importing. Keep an eye on this article for updates as they occur.
Thanks for your continued support and patience!