Lack of documentation while working

Hello I am a dev and I have good knowledge of coding but whats happenning is that where i work, there is a lack of documents stating the client requirements. The requirements are said via a 30 mins meeting. what happens is when later i start to do the actual work sometimes i miss out on the requirements, or not implement a feature properly. The arguement for not having proper docs is that meeting are more effective but i sometimes feel i miss out on details. Do anyone else think same?