Error boolean given when submitting form type constraint

[arirangz]

Hello,

We are getting this error using 1.5.26 and php 5.6 when submitting using isTrueV3 in the form type :
"Catchable Fatal Error: Argument 1 passed to EWZ\Bundle\RecaptchaBundle\Validator\Constraints\IsTrueValidatorV3::__construct()
must be an instance of EWZ\Bundle\RecaptchaBundle\Validator\Constraints\bool, boolean given

In the form type

->add('recaptcha', EWZRecaptchaV3Type::class, array(
'constraints' => array(
new IsTrueV3()
)
))

Thanks