Or in less complex words: ignore the string
It does not meet our quality standards when checking if something meets our quality standards. There are incidents across the network of users who simply repeat the error message when they fail the quality standards, and somehow that is enough to allow them to post. It's ridiculous, to paraphrase Mrozek, that such noise is permitted to slide through so brazenly.
At this time, a search for this string on Stack Overflow yields 14 live results and 11 dead results, none of which use the phrase for anything other than whining about hitting the quality standards. Even so, I'm suggesting that the phrase simply be ignored, not inflict a penalty. That way, if someone, somehow, has a legitimate question that happens to contain that phrase, then it won't get blocked (like those problems with
problem in the title). But by ignoring the phrase, it will keep poor quality posts from getting through. No matter how many times they copy-paste the phrase (another common method of trying to work around it).