Get Travel Insider with Simon Calder. A newsletter packed with tips, deals, inspiration, and the latest travel news Get the Travel Insider newsletter with Simon Calder Get the Travel Insider newsletter with Simon Calder Carnival Cruise Line has canceled some reservations that were accidentally offered at a much lower-than-usual price due to a tech glitch. Earlier this week, Reddit users pointed out an anomaly on the company’s website showing a solo balcony room on a six-day cruise being offered for only $300. Customers who purchased the trip 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 …