Error: The given specifier '["scheme,racket:+"]' was not accepted by any backend. Available backends:
  chez, chez-sep, racket, node, javascript, refc, gambit, vmcode-interp
Some backends have additional specifier rules, refer to their documentation.

Specifiers:29:1--30:35
 29 | %foreign "scheme,racket:+"
 30 | plusRacketFail : Int -> Int -> Int

Error: The given specifier '["scheme,racket:+"]' was not accepted by any backend. Available backends:
  chez, chez-sep, racket, node, javascript, refc, gambit, vmcode-interp
Some backends have additional specifier rules, refer to their documentation.

Specifiers:29:1--30:35
 29 | %foreign "scheme,racket:+"
 30 | plusRacketFail : Int -> Int -> Int

Main> Loaded file Specifiers.idr
Specifiers> Error: The given specifier '["scheme,racket:+"]' was not accepted by any backend. Available backends:
  chez, chez-sep, racket, node, javascript, refc, gambit, vmcode-interp
Some backends have additional specifier rules, refer to their documentation.

Specifiers:29:1--30:35

Specifiers> [exec] Specifiers> Error: The given specifier '["scheme,racket:+"]' was not accepted by any backend. Available backends:
  chez, chez-sep, racket, node, javascript, refc, gambit, vmcode-interp
Some backends have additional specifier rules, refer to their documentation.

Specifiers:29:1--30:35

[exec] Specifiers> 
Bye for now!