Fatal error: Uncaught Error: Class "WP_Translation_Controller" not found in /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-includes/l10n.php:800
Stack trace:
#0 /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-includes/l10n.php(957): load_textdomain('default', '/usr/home/death...', 'pl_PL')
#1 /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-settings.php(581): load_default_textdomain()
#2 /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-config.php(81): require_once('/usr/home/death...')
#3 /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-load.php(50): require_once('/usr/home/death...')
#4 /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-blog-header.php(13): require_once('/usr/home/death...')
#5 /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/index.php(19): require('/usr/home/death...')
#6 {main}
  thrown in /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-includes/l10n.php on line 800

Fatal error: Uncaught Error: Class "WP_Translation_Controller" not found in /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-includes/l10n.php:800
Stack trace:
#0 /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-includes/l10n.php(957): load_textdomain('default', '/usr/home/death...', 'pl_PL')
#1 /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler->handle()
#3 {main}
  thrown in /usr/home/deathclaw665/domains/twoj-trening.pl/public_html/wp-includes/l10n.php on line 800