Composer install prompt Composer could not find the config file

when I install fastadmin, when I get to composer install , the prompt is as follows:

Composer could not find the config file: C:UsersAdministratorAppDataRoamingComposer
To initialize a project, please create a composer.json file as described in the " Getting Started "section

Screenshot:

clipboard.png

laravelPHP;
windows 7 PHP7.2 ,composercomposer -v

clipboard.png

I have tried
1-

2-
https://codeshelper.com/q/10...
3-https://codeshelper.com/q/10...

"
Apr.18,2022

windows system administrator authority is not enough, Baidu solution or reinstall the system, try to use win10


mine is win10, tp5.1, first, git downloaded two packages, found that there is no autoload.php. You can only install composer (so it's best to start with composer, not git). After downloading composer, composer-v executes normally. But in the implementation of composer installde always error D:phpStudyPHPTutorialWWWworkProjectOnetp5 > composer install
Composer could not find the config file: D:phpStudyPHPTutorialphpphp-7.2.1-nts
To initialize a project, please create a composer.json file as described in the https://getcomposer.org/" Getting Started "section
I don't know why it always points to the phpphp-7.2 file, environment variables, ssh2, composer.json in the tp5 directory I also set up. But also reported an error

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1beb55c-45ffd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1beb55c-45ffd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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