Update 2.0.1 is now available.

Nintendo has released a patch to fix some issues that were introduced with version 2.0.0. This includes that bug that closed your game of you were gonna remodel a villagers house while your gates were open. Church the patch notes out below.

Patch notes

• Fixed an issue that could occur if a player asks to remodel a resident’s home while the airport gate is open.
• Fixed an issue where the Kiki & Lala wand item was mistakenly appearing in Nook Shopping as “Not for sale.”
• Fixed an issue where the coconut juice and frozen-treat set items would not appear under the Miscellaneous tab for DIY Recipes.
• Fixed an issue where the flowing-river flooring item would not display properly in Photopia or expanded player homes when placed horizontally.
• Fixed an issue where some residents would try to cook using something other than a kitchen item in their home.
• Fixed an issue where residents visiting a player’s home would talk as if they were in the café.

Source: Nintendo Everything