valheim terrain fix console command patch 0.150.3

this is the command to fix existing terrain using the new system introduced in patch 0.150.3

enable the console, starting the game with -console

to add the -console to your valheim, in steam right click the game and select properties

then in the next screen add -console into launch options

console can now be accessed in game by pressing F5

then once you are in game you can open the console, and type in optterrain

which should fix surrounding terrain with the new system.