On English Wikipedia, the redlinked page Talk:C Real is unreachable and displays an error. This might have to do with c: being a shortcut to Commons (not to be confused with the C:\ drive on the computer).
https://en.wikipedia.org/w/index.php?title=Talk:C_Real&action=edit&redlink=1
2018-07-19 07:27:58 [W1A9fQpAICwAAJKjYHUAAABR] mw1323 enwiki 1.32.0-wmf.12 exception ERROR: [W1A9fQpAICwAAJKjYHUAAABR] /w/index.php?title=Talk:C_Real&action=edit&redlink=1 MWException from line 650 of /srv/mediawiki/php-1.32.0-wmf.12/includes/logging/LogFormatter.php: Expected title, got null {"exception_id":"W1A9fQpAICwAAJKjYHUAAABR","exception_url":"/w/index.php?title=Talk:C_Real&action=edit&redlink=1","caught_by":"mwe_handler"} [Exception MWException] (/srv/mediawiki/php-1.32.0-wmf.12/includes/logging/LogFormatter.php:650) Expected title, got null #0 /srv/mediawiki/php-1.32.0-wmf.12/includes/logging/MoveLogFormatter.php(52): LogFormatter->makePageLink(NULL) #1 /srv/mediawiki/php-1.32.0-wmf.12/includes/logging/LogFormatter.php(467): MoveLogFormatter->getMessageParameters() #2 /srv/mediawiki/php-1.32.0-wmf.12/includes/logging/LogFormatter.php(442): LogFormatter->getActionMessage() #3 /srv/mediawiki/php-1.32.0-wmf.12/includes/logging/LogEventsList.php(389): LogFormatter->getActionText() #4 /srv/mediawiki/php-1.32.0-wmf.12/includes/logging/LogPager.php(378): LogEventsList->logLine(stdClass) #5 /srv/mediawiki/php-1.32.0-wmf.12/includes/pager/IndexPager.php(445): LogPager->formatRow(stdClass) #6 /srv/mediawiki/php-1.32.0-wmf.12/includes/logging/LogEventsList.php(657): IndexPager->getBody() #7 /srv/mediawiki/php-1.32.0-wmf.12/includes/EditPage.php(2603): LogEventsList::showLogExtract(OutputPage, array, Title, string, array) #8 /srv/mediawiki/php-1.32.0-wmf.12/includes/EditPage.php(652): EditPage->showIntro()