Facebook calendar not syncing with apple calendar

Hi there,

Just recently my mac keeps sending me a facebook notification in the top right hand corner asking me to log in with my password by pressing continue ... i do so and put in my facebook password and after 3 second the same notification pops up again, this is repeated several times and nothing is fixed.

At the same time now my calendar app wont sync up with my facebook calendar because i keep being told to put in my facebook password even though i have already done so ...

Anyway i try restarting my computer like 3 times and the same thing keeps happening 😟

Is there any way to fix this endless password loop??

Ta