Error code (Vec2.js:127)

[Gustavo5EB4]

I've tried to make "chloe" walk, but i didn't wante to continue. After a few "command+Z" became this message (PRINT BELLOW). I am afraid to loose my project that i making for my children. SOMEONE HELP ME!!!

[TheOriginalGC]

You won't lose everything since CH automatically saves. You might lose a little, however. You will need to exit and reboot CH.