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@chaos Show all backtrace and minimum code to reproduce the error.

Sure.

Put this in a Model:

PHP Code:

function replicate_bug ()
 {
$text = anchor("battle/view/4", 'here'); 
die();
} 


Full Backtrace

Code:

[AssertionError]

assert($currentURI instanceof SiteURI)

at SYSTEMPATH\Helpers\url_helper.php:34

Backtrace:
  1    SYSTEMPATH\Helpers\url_helper.php:34
      assert(false, 'assert($currentURI instanceof SiteURI)')

  2    SYSTEMPATH\Helpers\url_helper.php:151
      site_url('battle/view/4', null, Object(Config\App))

  3    APPPATH\Models\BattleModel.php:894
      anchor('battle/view/4', 'here')

  4    APPPATH\Models\BattleModel.php:840
      App\Models\BattleModel()->replicate_bug()

  5    APPPATH\Models\BattleModel.php:101
      App\Models\BattleModel()->complete()

  6    APPPATH\Models\GameModel.php:69
      App\Models\BattleModel()->execute('9')

  7    APPPATH\Controllers\GameController.php:19
      App\Models\GameModel()->tasks5m()

  8    SYSTEMPATH\CodeIgniter.php:915
      App\Controllers\GameController()->tasks5m('purrpaomiaopuf7345736')

  9    SYSTEMPATH\CodeIgniter.php:492
      CodeIgniter\CodeIgniter()->runController(Object(App\Controllers\GameController))

10    SYSTEMPATH\CodeIgniter.php:353
      CodeIgniter\CodeIgniter()->handleRequest(null, Object(Config\Cache), false)

11    FCPATH\index.php:79
      CodeIgniter\CodeIgniter()->run()