undefined method `new' for BigDecimal:Class

[Rob-Schneider]

Rails 7.0.1
ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x86_64-linux-gnu]
/var/lib/gems/2.7.0/gems/bigdecimal-3.1.2

when I try upload any files or images (at the website editor) I've receive this.

I think bigdecimal must be downgraded... may be

PS... Ohhh. This is the same ticket.
PPS. isn't the same. don't have bigint inside schema.rb

[Rob-Schneider]

the reason is ruby 2.7.2
there is no BigDecimal::new method
but there in ruby 2.5.1

[Rob-Schneider]

It was the reason to learn 'rbenv'
I've make fresh install by rbenv
ruby 2.5.9 (last version with BigDecimal::new)
Rails 5.1.7

refinery working without errors.