ASP.NET API failing to publish on azure

I'm trying to publish an C# API to azure, I followed all the steps in this documentation here but for some reason when I publish the application the build succeeds and crashes when this below line gets executed

Generating swagger file to 'C:\Users\user\Projs\API\bin\Release\netcoreapp3.1\swagger.json'.

and the only error log that gets printed is

Failed to generate swagger file. Error dotnet swagger tofile --serializeasv2 --output "C:\Users\user\Downloads\Projs\API\bin\Release\netcoreapp3.1\swagger.json" "C:\Users\user\Downloads\Projs\API\bin\Release\netcoreapp3.1\API.dll" v1

Unhandled exception. System.IO.FileLoadException: Could not load file or assembly 'System.Runtime, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The located assembly's manifest definition does not match the assembly reference. (0x80131040)
File name: 'System.Runtime, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'




Be sure that the Startup.cs for your application is calling AddSwaggerGen from within ConfigureServices in order to generate swagger file. Visit https://go.microsoft.com/fwlink/?LinkId=2131205&CLCID=0x409 for more information.

This is my startup.cs

 public void ConfigureServices(IServiceCollection services)
        {

            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc(
                    "v1",
                    new Microsoft.OpenApi.Models.OpenApiInfo { Title = "My API", Version = "v1" });
            });

        }


  public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseHttpsRedirection();

            app.UseRouting();

            app.UseAuthentication();
            app.UseSwagger(c =>
            {
                c.SerializeAsV2 = true;
            });

            app.UseSwaggerUI(c =>
            {
                c.SwaggerEndpoint("v1/swagger.json", "MyAPI V1");
            });

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }

This is my .csproj file

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
      <UseNETCoreGenerator>true</UseNETCoreGenerator>
      <UserSecretsId>d844b2a8-00b0-473d-8f97-9dca9f2899bd</UserSecretsId>
  </PropertyGroup>

    <PropertyGroup Condition="'$(TargetFramework)' == 'net45'">
        <AutoGenerateBindingRedirects>false</AutoGenerateBindingRedirects>
    </PropertyGroup>
  <ItemGroup>
    <Folder Include="Model\" />
    <Folder Include="Context\" />
    <Folder Include="Contracts\ServiceResponse\" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.AspNet.SignalR" Version="2.4.1" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="3.1.13" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.13" />
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.1.11" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.1.11">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
    </PackageReference>
    <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="3.1.11" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.1.10" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer.Design" Version="1.1.6" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.1.11">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
    </PackageReference>
    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
    <PackageReference Include="AutoMapper" Version="10.1.1" />
    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="3.2.4" />
    <PackageReference Include="Swashbuckle.AspNetCore" Version="5.0.0" />
    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="6.8.0" />
    <PackageReference Include="System.Runtime" Version="4.3.1" />
    
  </ItemGroup>
</Project>

I have tried solutions from these links but none of them worked

Visual Studio 2017 - Could not load file or assembly 'System.Runtime, Version=4.1.0.0' or one of its dependencies

https://github.com/Azure/azure-functions-vs-build-sdk/issues/160

Could not load file or assembly 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

Is there a way to fix this?

Update: I tried a solution that was told by a user in the thread to add binding redirects, I added a web.config and a app.config and added the bindinds but it still fails to publish

Update 2: I couldn't find a solution so I installed .net 5.0 and it worked