Fixed NullPointerException

src/main/java/org/openautonomousconnection/protocol/side/web/ProtocolWebServer.java

@@ -59,6 +59,7 @@ public abstract class ProtocolWebServer {
     /**
      * The configuration for the web server.
      */
+    @Getter
     private final WebServerConfig serverConfig;
     /**
      * The reference to the ProtocolBridge Object

src/main/java/org/openautonomousconnection/protocol/side/web/managers/SessionManager.java

@@ -128,7 +128,7 @@ public final class SessionManager {
             this.login = login;
             this.ip = ip;
             this.userAgent = userAgent;
-            this.expiresAt = System.currentTimeMillis() + (long) protocolWebServer.getConfigurationManager().getInt("sessionexpireminutes") * 60 * 1000;
+            this.expiresAt = System.currentTimeMillis() + (long) protocolWebServer.getServerConfig().getSessionExpiration() * 60 * 1000;
         }
 
         /**
@@ -158,7 +158,7 @@ public final class SessionManager {
          * @throws IOException If an I/O error occurs.
          */
         void refresh(ProtocolWebServer protocolWebServer) throws IOException {
-            this.expiresAt = System.currentTimeMillis() + (long) protocolWebServer.getConfigurationManager().getInt("sessionexpireminutes") * 60 * 1000;
+            this.expiresAt = System.currentTimeMillis() + (long) protocolWebServer.getServerConfig().getSessionExpiration() * 60 * 1000;
         }
     }
 }