Invoice Ninja Not sending invoices

Hello all,

I had problems sending invoices directly from invoice ninja. The test in the email settings configuration show that the test was sent and I received in the email. However, when I sent the invoices nothing happens. There is no message of success or something like that. After clicking on send email the popup page stay there and them disappear.

I have the Invoice Ninja - v4.5.18 installed using Softaculous.

What can I do to fix this problem?

Can you please check the email credential are correct in the ,env file