解决composer提示版本太旧Warning from https://mirrors.aliyun.com/composer: You are using an outdated version

Warning from https://mirrors.aliyun.com/composer: You are using an outdated version of Composer. Composer 2.0 is now available and you should upgrade. See https://getcomposer.org/2
 

原因:从报错信息可以看出是composer版本太旧的。

解决办法:升级本地的composer版本

composer self-update

 

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