iOS 13.3, error when trying to get page source

Hi,

I’m running appium tests using python on an ios simulator (iPhone 8, iOS 13.3). It was working fine but recently the tests have been unable to find any elements in the app, and when I run driver.page_source I get an error, suggesting appium cannot get the page source for some reason.

I get this error:

An unknown server-side error occurred while pro…m.app/Contents/Resources/app/node_modules/appium/node_modules/appium-base-driver/lib/jsonwp-proxy/proxy.js:235:19

I’m running xcode 11.3.1 and i’ve tried some other simulators but I get the same issue. If I try to use a touchaction instead of locating via a selector the elements can be interacted with, but they simply cannot be found with selectors.