Wordpress update error

several day ago I posted a post ‘wordpress installation error’ (Wordpress installation error) on the problem encounted when installing wordpress, now the problem is solved.
But there is a new problem occurring, updating error. I tried to update wordpress 5.1 to 5.2, plug-ins and themes respectively on the update page of wordpress control panel, all failed, just returned blank page (the urls are
could have this problem solved please?

You have to upgrade manually to WordPress 5.2 by clicking on me and following the instructions.

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