Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /var/www/html/docroot/modules/custom/bos_core/src/Controllers/Settings/CobSettings.php on line 120
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RuntimeException: Failed to start the session because headers have already been sent by "/var/www/html/docroot/modules/custom/bos_core/src/Controllers/Settings/CobSettings.php" at line 120. in Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->start() (line 132 of /var/www/html/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php).
Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage->start() (Line: 162)
Drupal\Core\Session\SessionManager->startNow() (Line: 193)
Drupal\Core\Session\SessionManager->save() (Line: 171)
Symfony\Component\HttpFoundation\Session\Session->save() (Line: 56)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 201)
Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138)
Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 53)
Asm89\Stack\Cors->handle() (Line: 50)
Drupal\ban\BanMiddleware->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741)
Drupal\Core\DrupalKernel->handle() (Line: 19)