Photoshop CC 2018 error

[HoangTN.Dung]

when i + - directly any get this error, you guys like me fix the error with

[Omar.Fathy · Accepted solution]

Did you make this before in this version, The calcualtions method wasn't available in CC 2018. It started from 2019 version. But it was in other Adobe Apps.

[HoangTN.Dung]

I used to do the same on pts cc 2018 on another computer, but this version on another computer doesn't work