Warning: unserialize() expects parameter 1 to be string, array given in Error

IM getting this error` Warning: unserialize() expects parameter 1 to be string, array given in /home/www/playstationforum.dk/wp-content/plugins/author-and-post-statistic-widgets/options/apsw-options-serialized.php on line 134
`

And i have got this since i install it a few weeks back but have waited for aupdate and not newest update still do it

https://ww.wp.xz.cn/plugins/author-and-post-statistic-widgets/