phacility/phabricator · error · Exception

You awake in a twisting maze of mirrors, all alike. You are

Error message

You awake in a twisting maze of mirrors, all alike. You are likely to be eaten by a graph cycle. Should you escape alive, you resolve to be more careful about putting dashboard panels inside themselves.

What it means

Error "You awake in a twisting maze of mirrors, all alike. You are likely to be eaten by a graph cycle. Should you escape alive, you resolve to be more careful about putting dashboard panels inside themselves." thrown in phacility/phabricator.

Source

Thrown at src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php:433

   * @return void
   */
  private function detectRenderingCycle(PhabricatorDashboardPanel $panel) {
    if ($this->parentPanelPHIDs === null) {
      throw new PhutilInvalidStateException('setParentPanelPHIDs');
    }

    $max_depth = 4;
    if (count($this->parentPanelPHIDs) >= $max_depth) {
      throw new Exception(
        pht(
          'To render more than %s levels of panels nested inside other '.
          'panels, purchase a subscription to %s Gold.',
          new PhutilNumber($max_depth),
          PlatformSymbols::getPlatformServerName()));
    }

    if (in_array($panel->getPHID(), $this->parentPanelPHIDs)) {
      throw new Exception(
        pht(
          'You awake in a twisting maze of mirrors, all alike. '.
          'You are likely to be eaten by a graph cycle. '.
          'Should you escape alive, you resolve to be more careful about '.
          'putting dashboard panels inside themselves.'));
    }
  }

  private function getContextPHID() {
    $context = $this->getContextObject();

    if ($context) {
      return $context->getPHID();
    }

    return null;
  }

View on GitHub (pinned to 5720a38cfe)

When it happens

Trigger: Thrown at src/applications/dashboard/engine/PhabricatorDashboardPanelRenderingEngine.php:433 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of phacility/phabricator@5720a38cfe (2026-08-21). Data as JSON: /api/errors/ff689bc3f30a9b01. Report an issue: GitHub.