Dll Assembly cant log into a file Log4Net - dll

Question

I created an assembly with name: company.exchange.app
Root name space is the same as the assembly name
The application is a class library that targets .NETFramework v4.8 and uses c# 7.0.
I try to create a logger that can be configured from an external config file. The reason for this external configuration is to allow person in charge of application deployment to define where the logs will be stored.
For this I created a file for configuration named: company.exchange.app.dll.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<section name="log4net"
type="log4net.config.Log4NetConfigurationSectionHandler,Log4net"/>
</configSections>
<!-- using section -->
<log4net>
<appender name="exchangeLogger" type="log4net.Appender.RollingFileAppender">
<!-- <file value="log_%date_exchange.log" /> -->
<param name="File" value="C:\logs\log_"/>
<param name="RollingStyle" value="Date"/>
<param name="DatePattern" value="yyyy-MM-dd_exc\han\ge.lo\g" />
<param name="StaticLogFileName" value="false"/>
<encoding value="utf-8" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %level [%thread] %type.%method - %message%n" />
</layout>
</appender>
<root>
<level value="All" />
<!-- If the following line is not included the log file will not be created even if log4net is configured with this file-->
<appender-ref ref="exchangeLogger" />
</root>
</log4net>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8" />
</startup>
<appSettings>
</appSettings>
</configuration>
I also modified AssemblyInfo.cs and added:
[assembly: log4net.Config.XmlConfigurator(ConfigFile = "company.exchange.app.dll.config")]
I call the logger through a private static field:
class AppServiceImpl : AppService
{
private static readonly ILog Log =
LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
public void DoSomething()
{
Log.Warn("DoSomething() called");
}
}
I unfortunatelly don't log anything.