Unable to initialize wp_mail function.

Dear sirs, help me, please: there is a big problem.
I have a website:
CMS: WordPress 4.2.2.
Hosting: hc.ru
PHP: 5.4
Domain: РФ
Plugin for email: cformsII, Version 14.9.9
Activated Plugin: no problem.
Set the shape: no problems.
Paste the code form on the page: no problems.
I am sending a test email:
THERE IS A BIG PROBLEM:
I see the message:
“Fatal Error: Unable to initialize wp_mail function.”
The email was not sent, of course
Help me please !!!

https://wordpress.org/plugins/cforms2/