What did you do wrong at work?

One year, I worked as a sales director in a hotel and sold moon cakes in a Mid-Autumn Festival hotel. I made all sales plans and schemes, including publicity channels, advertising copy, picture design, sales tasks of various departments, sales commission reward scheme, cost accounting of moon cakes, estimated profit calculation ... and soon reported to the general manager for approval. I was very happy to send an email to the PR manager, asking her to upload the proposal to the hotel official website, but I forgot to tell her to delete the cost accounting and profit budget of internal copywriting. The girl didn't check it carefully either. Upload it directly to official website, and send the documents to customers. Fortunately, customers think that the profit of our moon cakes is not black, so the sales of moon cakes are not bad. However, this incident has become a laughing stock in the circle and has been laughed at by colleagues for a long time.