Добавьте файлы проекта.

NebulaAuth/NLog.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
+      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+      throwExceptions="true">
+
+	<targets>
+		<target xsi:type="File" name="File" fileName="log.log"
+		        deleteOldFileOnStartup="true"
+		>
+			<layout xsi:type='CompoundLayout'>
+				<layout xsi:type="JsonLayout" includeEventProperties="true" IncludeScopeProperties="true">
+					<attribute name="time" layout="${longdate}" />
+					<attribute name="level" layout="${level:upperCase=true}"/>
+					<attribute name="message" layout="${message}" />
+					<attribute name="exception" layout="${exception:format=@}" encode="false"/>
+				</layout>
+				<layout type='SimpleLayout' text="," />
+			</layout>
+		
+		</target>
+	</targets>
+
+	<rules>
+		<logger name="*" minlevel="Trace" writeTo="File" />
+	</rules>
+</nlog>