Search index problem

In error log related to my website, one of the most common errors is the next one:

Code:

[10-Sep-2016 11:27:57 Europe/Sarajevo] PHP Fatal error: Uncaught exception 'Exception' with message 'Query error: Duplicate entry '....SOME TEXT HERE...', '4feb98dc07d3c1340e07a9102131b9a5'))' thrown in /var/www/vhosts/f***/httpdocs/system/modules/core/library/Contao/Database/Statement.php on line 295 #0 /var/www/vhosts/***/httpdocs/system/modules/core/library/Contao/Database/Statement.php(264): Contao\Database\Statement->query() #1 /var/www/vhosts/***/httpdocs/system/modules/core/library/Contao/Search.php(214): Contao\Database\Statement->execute() #2 /var/www/vhosts/***/httpdocs/system/modules/core/classes/FrontendTemplate.php(330): Contao\Search::indexPage(Array) #3 /var/www/vhosts/***/httpdocs/system/modules/core/classes/FrontendTemplate.php(124): Contao\FrontendTemplate->addToSearchIndex() #4 /var/www/vhosts/***/httpdocs/system/modules/core/pages/PageRegular.php(190): Contao\FrontendTemplate->output(true) #5 /var/www/vhosts/***/httpdocs/system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true) #6 /var/www/vhosts/***/httpdocs/index.php(20): Contao\FrontendIndex->run() #7 {main}

I have no idea what to change here to avoid it. Any advice is welcomed.

Contao version 3.5.16

Hi,

should be this issue: https://github.com/contao/core/issues/8460

Quote:

Originally Posted by xchs

Hi,

should be this issue: https://github.com/contao/core/issues/8460

I've implemented solution stated there, so I will check if problem is resolved.

Thank you.