composer Content-Length mismatch, received 48756 bytes out of the expected 855656

参考：https://www.jianshu.com/p/760726b6b9c0

还是老样子coposer报错了，这玩意贼容易报错，解决方式如下

composer config -gl // 查看下源

// 如果有需要就换成阿里云的
composer config repo.packagist composer https://mirrors.aliyun.com/composer/

或者有可能是内存不足导致的

composer config cache-files-maxsize 800MiB

然后就ok了🥳