range_error_message raises TypeError when error_message is a translator

[anonymous378]

from pydal import validators
from py4web import Translator
# T = Translator("soccer/translations")
# T.select("es")

T = Translator()

# default error message works fine
r = validators.range_error_message(None, what_to_enter = "a number", minimum=1, maximum=8)
print(r)


# string works fine
r = validators.range_error_message("Hello", what_to_enter = "a number", minimum=1, maximum=8)
print(r)

# use of translator fails
# TypeError: unsupported operand type(s) for %: 'lazyT' and 'dict'
r = validators.range_error_message(T("Hello"), what_to_enter = "a number", minimum=1, maximum=8)  
print(r)

I believe the code:
return translate(error_message) % dict(min=minimum, max=maximum)
should be replaced with
return str(translate(error_message)) % dict(min=minimum, max=maximum)