Postgresql – EF Core querying gives an error "Could not load file or assembly 'Npgsql. The system cannot find the file specified."

I am using .NET 6 and PostgreSQL database.

I have a hosted service, which periodically calls repository's function and is querying database entities using EF Core as so:

public class NotificationRepository : INotificationRepository
    {
        public async Task<List<Notification>> GetUnreadDeviceNotifications()
        {
            using var context = new MyDbContext();
            return await context.Notifications.Where(x => !x.IsSentTimestamp.HasValue && x.ChannelId == 8).ToListAsync();
        }
    }

As soon as I deploy on linux machine and every time service calls GetUnreadDeviceNotifications I get this error:

Aug 07 12:50:46 my-app my-app.Web[1432629]: System.IO.FileNotFoundException: Could not load file or assembly 'Npgsql, Version=6.0.8.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7'. The system cannot find the file specified.
Aug 07 12:50:46 my-app my-app.Web[1432629]: File name: 'Npgsql, Version=6.0.8.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7'
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at Npgsql.EntityFrameworkCore.PostgreSQL.Infrastructure.Internal.NpgsqlOptionsExtension.ExtensionInfo.GetServiceProviderHashCode()
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at Microsoft.EntityFrameworkCore.DbContextOptions.GetHashCode()
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd[TArg](TKey key, Func`3 valueFactory, TArg factoryArgument)
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.GetOrAdd(IDbContextOptions options, Boolean providerRequired)
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at Microsoft.EntityFrameworkCore.DbContext.get_ContextServices()
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at Microsoft.EntityFrameworkCore.DbContext.get_Model()
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.get_EntityType()
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.get_EntityQueryable()
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at Microsoft.EntityFrameworkCore.Internal.InternalDbSet`1.System.Linq.IQueryable.get_Provider()
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at System.Linq.Queryable.Where[TSource](IQueryable`1 source, Expression`1 predicate)
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at my-app.Infrastructure.Repositories.NotificationRepository.GetUnreadDeviceNotifications() in C:Projectsmy-appsrcmy-app.InfrastructureRepositoriesNotificationRepository.cs:line 22
Aug 07 12:50:46 my-app my-app.Web[1432629]:    at my-app.Application.Services.MessagingServices.NotificationReadingService.DoWork(Object state) in C:Projectsmy-appsrcmy-app.ApplicationServicesMessagingServicesNotificationReadingService.cs:line 35

These are dependencies I have:

  <ItemGroup>
    <PackageReference Include="Dapper" Version="2.0.123" />
    <PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="10.0.1" />
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.3" />
    <PackageReference Include="Npgsql" Version="6.0.3" />
    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.3" />
  </ItemGroup>

P.S. It seems that it is working fine on Windows