phpBB • Free and Open Source Forum Software

I have problem with installation.
When i try install, i got error: ROLE_FORUM_POLLS not exist.
I've checked and compare two database with forums, and i don't have these roles in table: prefix_acl_roles:
18. ROLE_FORUM_LIMITED
21. ROLE_FORUM_POLLS
22. ROLE_FORUM_LIMITED_POLLS

Could You tell me it is problem with my forum or with plugin installer?
And how to fix it?

Create the roles with such names

Татьяна5 wrote:Create the roles with such names

It's work. Thx!
BTW. for what this extension use roles?

To set permissions for these roles