我已经升级了我的API，可以使用.NET 7和Ubuntu 23.04，一切都很顺利，API和数据库连接在我的本地机器上，我可以发送请求，但是当我发布和部署应用程序到我的服务器时，它似乎没有读取appsetting.json中的connectionString。
这是我的appsettings.json

{
    "AppSettings": {
        "Secret": "*************",
        "EmailFrom": "********",
        "SmtpHost": "v******",
        "SmtpPort": 587,
        "SmtpUser": "a*****",
        "SmtpPass": "HJu******"
    },

  "ConnectionStrings": {
    "WebApiDatabase": "Data Source=WebApiDatabase.db",
    "HangfireConnection": "Server=**.**.***.***;Port=5432;Database=Min;User Id=postgres;Password=min***;" //server
    //"HangfireConnection": "Host=localhost;Port=5432;Database=Min;User Id=postgres;Password=*****;" // local
  },

    "Logging": {
      "LogLevel": {
        "Default": "Information",
        "Microsoft": "Warning",
        "Microsoft.Hosting.Lifetime": "Information",
        "Hangfire": "Information"
      } 
    },

    "AllowedHosts": "*",

  "postgresqlconnection": {
    "connectionString": "Server=**.**.***.***;Port=5432;Database=Min;User Id=postgres;Password=min***;" //server
    //"connectionString": "Host=localhost;Port=5432;Database=Min;User Id=postgres;Password=*****;" // local
  },

    "mongoconnection": {
        "connectionString": "mongodb://localhost:27017/?readPreference=primary&appname=MongoDB%20Compass%20Community&ssl=false",
        "database": "backlog",
        "collection": "rawData",
        "collectionpMedian": "resultPmedian",
        "collectionClustering": "resultClustering"
    },

    "urlSettings": {
        "staticPageUrl": "http://**.**.***.***",
        "backendUrl": "http://**.**.***.***"
    },

    "variousSettings": {
        "defaultMessage": "A default message if nothing is found in the database."
    }
}

我的startup.cs

services.AddHangfire(configuration => configuration
                .SetDataCompatibilityLevel(CompatibilityLevel.Version_170)
                .UseSimpleAssemblyNameTypeSerializer()
                .UseRecommendedSerializerSettings()
                .UsePostgreSqlStorage(Configuration.GetConnectionString("HangfireConnection")));

我的DataContext.cs

private readonly IConfiguration Configuration;

        public DataContext(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        protected override void OnConfiguring(DbContextOptionsBuilder options)
        {
            // connect to postgress database
            var connectionString = Configuration["postgresqlconnection:connectionString"];

            options.UseNpgsql(connectionString);
        }

The error

root@ubuntu-4gb:/# /usr/bin/dotnet /var/www/MinAPI/MinWebApi.dll
Unhandled exception. System.ArgumentNullException: Value cannot be null. (Parameter 'connectionString')
   at Hangfire.PostgreSql.PostgreSqlStorage..ctor(String connectionString, Action`1 connectionSetup, PostgreSqlStorageOptions options)
   at Hangfire.PostgreSql.PostgreSqlBootstrapperConfigurationExtensions.UsePostgreSqlStorage(IGlobalConfiguration configuration, String connectionString, Action`1 connectionSetup, PostgreSqlStorageOptions options)
   at Hangfire.PostgreSql.PostgreSqlBootstrapperConfigurationExtensions.UsePostgreSqlStorage(IGlobalConfiguration configuration, String connectionString)
   at WebApi.Startup.<ConfigureServices>b__4_2(IGlobalConfiguration configuration) in D:\C Sharp\Startup.cs:line 46
   at Hangfire.HangfireServiceCollectionExtensions.<>c__DisplayClass0_0.<AddHangfire>b__0(IServiceProvider provider, IGlobalConfiguration config)
   at Hangfire.HangfireServiceCollectionExtensions.<>c__DisplayClass1_0.<AddHangfire>b__14(IServiceProvider serviceProvider)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite callSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.CreateServiceAccessor(Type serviceType)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetService[T](IServiceProvider provider)
   at Hangfire.HangfireServiceCollectionExtensions.ThrowIfNotConfigured(IServiceProvider serviceProvider)
   at Hangfire.HangfireServiceCollectionExtensions.CreateBackgroundJobServerHostedService(IServiceProvider provider, JobStorage storage, IEnumerable`1 additionalProcesses, BackgroundJobServerOptions options)
   at Hangfire.HangfireServiceCollectionExtensions.<>c__DisplayClass9_0.<AddHangfireServerInner>b__0(IServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitDisposeCache(ServiceCallSite transientCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitIEnumerable(IEnumerableCallSite enumerableCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitNoCache(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass2_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.Extensions.Hosting.Internal.Host.StartAsync(CancellationToken cancellationToken)
   at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.RunAsync(IHost host, CancellationToken token)
   at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.RunAsync(IHost host, CancellationToken token)
   at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.Run(IHost host)
   at WebApi.Program.Main(String[] args) in D:\C Sharp\Program.cs:line 12

我试图在函数中硬编码字符串，但发生了同样的错误，试图将变量名称更改为相同，试图将appsettings.Development.json更新为与appsetting.json相同，它工作了，但当我重新启动应用程序服务时，错误再次出现。
在这里找了四个小时，没有任何帮助。请指导我，提前谢谢。