src/Debug/Internal.php
public function onError(Event $error)
    {
        if ($this->debug->getCfg('collect')) {
            /*
                temporarily store error so that we can easily determine error/warn
                 a) came via error handler
                 b) calling info
            */
            $this->error = $error;
            $errInfo = $error['typeStr'].': '.$error['file'].' (line '.$error['line'].')';
            $errMsg = $error['message'];
            if ($error['type'] & $this->debug->getCfg('errorMask')) {
                $this->debug->error($errInfo.': ', $errMsg);
            } else {
                $this->debug->warn($errInfo.': ', $errMsg);
            }
            $error['continueToNormal'] = false; // no need for PHP to log the error, we've captured it here
            $error['inConsole'] = true;
            // Prevent ErrorHandler\ErrorEmailer from sending email.
            // Since we're collecting log info, we send email on shutdown
            $error['email'] = false;
            $this->error = null;
        } elseif ($this->debug->getCfg('output')) {
            $error['email'] = false;
            $error['inConsole'] = false;
        } else {
            $error['inConsole'] = false;
        }
    }
public function onError(Event $error)
    {
        if ($this->debug->getCfg('collect')) {
            /*
                temporarily store error so that we can easily determine error/warn
                 a) came via error handler
                 b) calling info
            */
            $this->error = $error;
            $errInfo = $error['typeStr'].': '.$error['file'].' (line '.$error['line'].')';
            $errMsg = $error['message'];
            if ($error['type'] & $this->debug->getCfg('errorMask')) {
                $this->debug->error($errInfo.': ', $errMsg);
            } else {
                $this->debug->warn($errInfo.': ', $errMsg);
            }
            $error['continueToNormal'] = false; // no need for PHP to log the error, we've captured it here
            $error['inConsole'] = true;
            // Prevent ErrorHandler\ErrorEmailer from sending email.
            // Since we're collecting log info, we send email on shutdown
            $error['email'] = false;
            $this->error = null;
        } elseif ($this->debug->getCfg('output')) {
            $error['email'] = false;
            $error['inConsole'] = false;
        } else {
            $error['inConsole'] = false;
        }
    }
errorHandler.error event subscriber
adds error to console as error or warn

@param Event $error error/event object

@return void