Message on my iMac
i was trying to login my message app on my iMac and got this and says updating but nothing happening for an hour stays in one spot I do not see the progress bar moving so i have forced closed it and still comes back with this message see screen shot. How can I bypass this so i can get my messger to work again? Like i said been liked this for an hour. And on dock keeps jumping up and down?
Thank you all for our help into this matter.
iMac, macOS High Sierra (10.13.5), Please help asap