Could you please tell me about your PHP version and web server name? (Apache/IIS)?
@eteled
This error seems to be for WordPress nor wp-statistics Plugin.
please tell me what is your php version and (win or linux) ?
Thread Starter
eteled
(@eteled)
@mehrshaddarzi @mostafas1990
CentOS Linux 7.3.1611 + Nginx1.14.2 + PHP7.2
I Upgraded WP Statistics to version 12.6 yesterday.(v12.5 was five)
Episode: Today I wanted to go back to version 12.5. I deleted the wp-statistics folder in the plugins folder, and replaced it with this(https://downloads.wordpress.org/plugin/wp-statistics.12.5.zip),as a result, the entire site went wrong:

Now I back at 12.6, the two lines of errors remain on the “pages” page.
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This reply was modified 7 years, 2 months ago by
eteled.
Thread Starter
eteled
(@eteled)
+ Top Pages, all the items were repeated twice:

@eteled
TOP 10 PAGES -> this issue solve in new version and release soon.
for rest api error please use wp-statistics 12.5.7 version (not 12.5) until new version.
https://downloads.wordpress.org/plugin/wp-statistics.12.5.7.zip
Thread Starter
eteled
(@eteled)
Thanks for your suggestion and link, I hugged 12.5.7, it looks all right!