Unknown database type

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Hello,

I have been getting these error messages of late, when i try to log in. Has anyone else had this?

first attempt at login give this.
Invalid username or password.

second attempt gives this.

Unknown database type enum requested, Doctrine\DBAL\Platforms\MySqlPlatform may not support it.

Strange thing is i am actually logged in but since the screen doesn't change i didn't notice this until i realised the bar across the top was in fact the admins bar, so as it gives me access to the dashboard etc this is the only way to reach the home page via sitemap\visit.

Now, this second attempt, i did assume id got the wrong password so i changed it to one i had been using, it is then the bar across the top becomes visible leading me to think i had indeed got the wrong password, and now it was correct. But why does it stay on the login page doesnt remove the error strap across the top (in pink).

any help or ideas?

thanks
pat

fivepints