Update to 5.2.7 failed

Hello!

I can't upgrade easyblog with following message.
- Error updating component when using the API from Joomla. Please try again.

So, I downloaded a launcher package file(com_easyblog_launcher_pro_5.2.7_joomla.zip)
and try install the package file manually.

But it hangs with "Initializing database Synchronization" with circle icon circulating.

What should I do for it?

Any advice would be appreciated.
Thank you.