Error when warning with permanent ban

I tried to warn a member and also ban permanently, but I got the error:

BadMethodCallException:  (0)
#0 /home/sosinvision.com.br/public_html/system/Email/Email.php(1045) : eval()'d code(394): IPS\Content\Item->content()
#1 /home/sosinvision.com.br/public_html/system/Email/Email.php(1048): IPS\Theme\email_plaintext_core_warning()
#2 /home/sosinvision.com.br/public_html/system/Email/Email.php(452): IPS\Email::template()
#3 /home/sosinvision.com.br/public_html/system/Email/Email.php(762): IPS\Email->compileContent()
#4 /home/sosinvision.com.br/public_html/system/Email/Outgoing/Php.php(67): IPS\Email->_compileMessage()
#5 /home/sosinvision.com.br/public_html/system/Email/Email.php(826): IPS\Email\Outgoing\Php->_send()
#6 /home/sosinvision.com.br/public_html/applications/core/sources/Warnings/Warning.php(847): IPS\Email->send()
#7 /home/sosinvision.com.br/public_html/system/Content/Item.php(617): IPS\core\Warnings\Warning->sendNotifications()
#8 /home/sosinvision.com.br/public_html/system/Content/Item.php(217): IPS\Content\Item::createFromForm()
#9 /home/sosinvision.com.br/public_html/applications/core/modules/front/system/warnings.php(155): IPS\Content\Item::create()
#10 /home/sosinvision.com.br/public_html/system/Dispatcher/Controller.php(128): IPS\core\modules\front\system\warnings->warn()
#11 /home/sosinvision.com.br/public_html/system/Content/Controller.php(124): IPS\Dispatcher\Controller->execute()
#12 /home/sosinvision.com.br/public_html/applications/core/modules/front/system/warnings.php(57): IPS\Content\Controller->execute()
#13 /home/sosinvision.com.br/public_html/system/Dispatcher/Dispatcher.php(169): IPS\core\modules\front\system\warnings->execute()
#14 /home/sosinvision.com.br/public_html/index.php(16): IPS\Dispatcher->run()
#15 {main}

The warning was processed, but the user wasn't banned.