Dream is a very personal experience, so many factors need to be considered to explain the meaning of dream, such as personal situation, cultural background, life experience, emotional state and so on. Generally speaking, dreaming that someone tells you that the world is over may mean that you feel that your connection with some people or things is weakening in real life, or that the development of some things is not as smooth as you think. This may make you feel lost or uneasy, but it may also remind you to cherish what you have now and be more clear about your goals and directions.
In addition, dreaming of the end of this world may also remind you that your life experience and interpersonal relationship are changing, and you need to make adjustments in your consciousness and actions to adapt to these changes. In any case, the most important thing is to stay calm and sober, and don't let the emotions brought by dreams affect your daily life and work. If you feel confused or uneasy, you can try to communicate with relatives and friends or seek professional psychological counseling.