NoMethodError: undefined method `initialized?' for #<I18n::Backend::Chain:0x007fdf34b8bb20>

When i try to run setup or import rake command i have this issue : 
```
rake aborted!
NoMethodError: undefined method `initialized?' for #<I18n::Backend::Chain:0x007fdf34b8bb20>
/Users/julien/.rbenv/versions/2.3.3/bin/bundle:23:in `load'
/Users/julien/.rbenv/versions/2.3.3/bin/bundle:23:in `<main>'
```

i'm with rails 4.2.10, tolk 2.0.0

Any idea ?