Error

We're sorry, but an unhandled error occurred. Please see the details below.

Undefined offset: 1

/home/users/grabo/public_html/_nowa_www/seo.php line 741

}
.contactContact__left p {font-size: 1.7rem; color: #818181; line-height: 1.3925;}
</style></head>',$f);
 
if(strstr($uri,'/oferta/') && !strstr($f,'<table class="tableOferta2') && !strstr($f,'<p class="box_txt"')){
  $container = explode('<div class="offerActive">',$f);
  $container = explode('</div>',$container[1]);
  $container = '<div class="offerActive">'.$container[0].'</div>';
  $button = '<p style="margin-top:25px;"><a href="https://www.grabo.com.pl/pl/kontakt" class="btn-product">Zapytaj o produkt</a></p>';
  $new_container = str_replace('</div>',$button.'</div>',$container);
  $f = str_replace($container,$new_container,$f);
  //$f = str_replace('<title>',$new_container.'<title>',$f);
}

Stack trace

# Called Code Document Line
3 seo_buffer()
2 ob_end_flush() ~/vendor/symfony/http-foundation/Symfony/Component/HttpFoundation/Response.php 1249
1 Symfony\Component\HttpFoundation\Response::closeOutputBuffers() ~/vendor/symfony/http-foundation/Symfony/Component/HttpFoundation/Response.php 381
0 Symfony\Component\HttpFoundation\Response->send() ~/index.php 50