这个错误是什么意思
{
"errors": [{
"type": "PHPMailer\PHPMailer\Exception",
"message": "Invalid address: (From): 2550521043",
"code": 0,
"file": "/storage/emulated/0/htdocs/MDClub/vendor/phpmailer/phpmailer/src/PHPMailer.php",
"line": 1256,
"trace": [{
"file": "/storage/emulated/0/htdocs/MDClub/vendor/phpmailer/phpmailer/src/PHPMailer.php",
"line": 1256,
"function": null,
"class": "PHPMailer\PHPMailer\Exception",
"args": ["Invalid address: (From): 2550521043"]
}, {
"file": "/storage/emulated/0/htdocs/MDClub/src/Library/Email.php",
"line": 69,
"function": "setFrom",
"class": "PHPMailer\PHPMailer\PHPMailer",
"args": ["2550521043", "MDClub"]
}, {
"file": "/storage/emulated/0/htdocs/MDClub/src/Library/Email.php",
"line": 114,
"function": "getMailer",
"class": "MDClub\Library\Email",
"args": []
}, {
"file": "/storage/emulated/0/htdocs/MDClub/src/Initializer/App.php",
"line": 116,
"function": "send",
"class": "MDClub\Library\Email",
"args": [
["93650855@qq.com"], "MDClub的测试邮件", "你收到了这封邮件，表示你的邮件服务器已设置成功"]
}, {
"file": "/storage/emulated/0/htdocs/MDClub/src/Initializer/App.php",
"line": 116,
"function": "call_user_func_array",
"class": null,
"args": [
[{}, "send"],
[
["93650855@qq.com"], "MDClub的测试邮件", "你收到了这封邮件，表示你的邮件服务器已设置成功"]
]
}, {
"file": "/storage/emulated/0/htdocs/MDClub/src/Initializer/Facade.php",
"line": 21,
"function": "createFacade",
"class": "MDClub\Initializer\App",
"args": ["MDClub\Library\Email", "send", [
["93650855@qq.com"], "MDClub的测试邮件", "你收到了这封邮件，表示你的邮件服务器已设置成功"]]
}, {
"file": "/storage/emulated/0/htdocs/MDClub/src/Controller/RestApi/Email.php",
"line": 25,
"function": "__callStatic",
"class": "MDClub\Initializer\Facade",
"args": ["send", [
["93650855@qq.com"], "MDClub的测试邮件", "你收到了这封邮件，表示你的邮件服务器已设置成功"]]
}, {
"file": "/storage/emulated/0/htdocs/MDClub/src/Initializer/RouteStrategy.php",
"line": 80,
"function": "send",
"class": "MDClub\Controller\RestApi\Email",
"args": []
}, {
"file": "/storage/emulated/0/htdocs/MDClub/vendor/slim/slim/Slim/Routing/Route.php",
"line": 381,
"function": "__invoke",
"class": "MDClub\Initializer\RouteStrategy",
"args": [
[{}, "send"], {}, {}, []
]
}, {
"file": "/storage/emulated/0/htdocs/MDClub/src/Middleware/NeedManager.php",
"line": 33,
"function": "handle",
"class": "Slim\Routing\Route",
"args": [{}]
}, {
"file": "/storage/emulated/0/htdocs/MDClub/vendor/slim/slim/Slim/MiddlewareDispatcher.php",
"line": 188,
"function": "process",
"class": "MDClub\Middleware\NeedManager",
"args": [{}, {}]
}, {
"file": "/storage/emulated/0/htdocs/MDClub/vendor/slim/slim/Slim/MiddlewareDispatcher.php",
"line": 81,
"function": "handle",
"class": "class@anonymous
