The json extension is missing. Install it or recompile php without --disable-jsonyum install php72u-jsonyum install php72u-json 版权声明：本文为iiiiiiiiiiii9原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。原文链接：https://blog.csdn.net/iiiiiiiiiiii9/article/details/80941539