Carnival Cruise Line has canceled some reservations that were accidentally offered at a much lower-than-usual price , leaving guests infuriated. Earlier this week, Reddit users pointed out a glitch on the company’s website showing a solo balcony room on a six-day cruise being offered for only $300 . Customers who purchased the cruise were thrilled by the steep discount, as a five to seven-day trip usually costs between $600 to $1,500 per person, depending on the destination. However, Carnival caught the error and sent an email to passengers about their reservations being canceled as a result, according to a screenshot of the message shared by a Reddit user . “Following a planned IT maintenance project this past weekend, some guests saw a random display of prices that were far below any reasonable promotional fare,” the email reads. “The reservation you made was one of them. We regret to inform you that we will not be able to honor your reservation request.…