Calculate seal - MAC is not correct

[ming1111dev]

I am working on menetico payment gateway integration.
I've submitted the form based on your getFields() method.
But the Menetico says the mac is not correct.

This is what I'm using:
'reference' => 'REF001',
'description' => 'Documentation',
'language' => 'FR',
'email' => '[email protected]',
'amount' => 42,
'currency' => 'EUR',
'dateTime' => Carbon::now(),
'successUrl' => 'http://127.0.0.1:8000/paywithmonetico',
'errorUrl' => 'http://127.0.0.1:8000/paywithmonetico',
Please help me with this issue.

[rtouze]

Sorry for the delay, do you still have issue with MAC calculation?