Thank Mr. Erel very much
Maybe you right
When the above error occurs on the B4A side, at the same time on the B4J side on the server there is also the following message:
SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See
http://www.slf4j.org/codes.html#noProviders for further details.
java.lang.RuntimeException: java.lang.RuntimeException: Object should first be initialized (MongoDatabase).
at b4j/anywheresoftware.b4a.BA.raiseEvent2(Unknown Source)
at b4j/anywheresoftware.b4a.BA.raiseEvent(Unknown Source)
at b4j/anywheresoftware.b4j.object.JServlet$Handle.run(Unknown Source)
at b4j/anywheresoftware.b4j.object.JServlet.Handle(Unknown Source)
at b4j/anywheresoftware.b4j.object.JServlet.doPost(Unknown Source)
at b4j/jakarta.servlet.http.HttpServlet.service(Unknown Source)
at b4j/jakarta.servlet.http.HttpServlet.service(Unknown Source)
at b4j/org.eclipse.jetty.servlet.ServletHolder.handle(Unknown Source)
at b4j/org.eclipse.jetty.servlet.ServletHandler.doHandle(Unknown Source)
at b4j/org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(Unknown Source)
at b4j/org.eclipse.jetty.server.session.SessionHandler.doHandle(Unknown Source)
at b4j/org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(Unknown Source)
at b4j/org.eclipse.jetty.server.handler.ContextHandler.doHandle(Unknown Source)
at b4j/org.eclipse.jetty.server.handler.ScopedHandler.nextScope(Unknown Source)
at b4j/org.eclipse.jetty.servlet.ServletHandler.doScope(Unknown Source)
at b4j/org.eclipse.jetty.server.session.SessionHandler.doScope(Unknown Source)
at b4j/org.eclipse.jetty.server.handler.ScopedHandler.nextScope(Unknown Source)
at b4j/org.eclipse.jetty.server.handler.ContextHandler.doScope(Unknown Source)
at b4j/org.eclipse.jetty.server.handler.ScopedHandler.handle(Unknown Source)
at b4j/org.eclipse.jetty.server.handler.HandlerCollection.handle(Unknown Source)
at b4j/org.eclipse.jetty.server.handler.HandlerWrapper.handle(Unknown Source)
at b4j/org.eclipse.jetty.server.Server.handle(Unknown Source)
at b4j/org.eclipse.jetty.server.HttpChannel.lambda$handle$0(Unknown Source)
at b4j/org.eclipse.jetty.server.HttpChannel.dispatch(Unknown Source)
at b4j/org.eclipse.jetty.server.HttpChannel.handle(Unknown Source)
at b4j/org.eclipse.jetty.server.HttpConnection.onFillable(Unknown Source)
at b4j/org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(Unknown Source)
at b4j/org.eclipse.jetty.io.FillInterest.fillable(Unknown Source)
at b4j/org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(Unknown Source)
at b4j/org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(Unknown Source)
at b4j/org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: Object should first be initialized (MongoDatabase).
at b4j/anywheresoftware.b4a.AbsObjectWrapper.getObject(Unknown Source)
at b4j/anywheresoftware.mongo.MongoDatabaseWrapper.GetCollection(Unknown Source)
at b4j/b4j.example.rmdbcserver._find(Unknown Source)
at b4j/b4j.example.rmdbcserver._handle(Unknown Source)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
... 32 more
I don't have much experience in this matter
Everyone please help me to solve this problem
Many Thanks .!