Safari crashes when typing in the address bar.
Apples servers causing the problems when trying to return queries and suggestions.
On a Desktop Mac….
Open Safari > Preferences > Search > and then untick ‘Include Safari Suggestions’ in the Smart Search Field section. Close Safari, shut down the machine and restart. You can then re-enable the ‘Include Safari Suggestions’. If for some reason they are still getting search problems, then open Safari > Preferences > Privacy > and click on ‘Remove All Website Data’. Restart the machine and then Safari.
On an iOS device…..
Go into Settings > Safari > and turn off the toggle for ‘Safari Suggestions’, then restart the device.
If you don’t have any more problems, you can try turning the ‘Safari Suggestions’ back on, both on your iOS and Desktop device.