Multiline Pattern - Filebeat

Hello, I am having problems making a multiline match. The logs come from a file saved on the client machine. I send to the logstash server with filebeat. In the filebeat configuration I have the following:

multiline.pattern: '^%{LOGLEVEL} %{TIMESTAMP_ISO8601} \['
multiline.negate: true
multiline.match: after

The log file looks like this:

ERROR 2019-09-13 08:27:24,794 [pool-2-thread-17604] com.mirth.connect.server.userutil.MessageObject: The messageObject.getRawData() method is deprecated and will soon be removed. Please use connectorMessage.getRawData() instead.
ERROR 2019-09-13 08:27:24,794 [pool-2-thread-17604] com.mirth.connect.server.userutil.ResponseFactory: The getSuccessResponse(message) method is deprecated and will soon be removed. Please use getSentResponse(message) instead.
ERROR 2019-09-13 08:27:47,515 [Timer-40] com.mirth.connect.connectors.jdbc.DatabaseReceiver: Failed to poll for messages from the database in channel
com.mirth.connect.connectors.jdbc.DatabaseReceiverException: Unrecognized value returned from script in channel expected ResultSet or List<Map<String, Object>>: org.mozilla.javascript.Undefined@76ea45d7
	at com.mirth.connect.connectors.jdbc.DatabaseReceiverScript.poll(DatabaseReceiverScript.java:112)
	at com.mirth.connect.connectors.jdbc.DatabaseReceiver.poll(DatabaseReceiver.java:111)
	at com.mirth.connect.donkey.server.channel.PollConnector$PollConnectorTask.run(PollConnector.java:141)
	at java.util.TimerThread.mainLoop(Unknown Source)
	at java.util.TimerThread.run(Unknown Source)
ERROR 2019-09-13 08:27:47,906 [Timer-47] com.mirth.connect.connectors.jdbc.DatabaseReceiver: Failed to poll for messages from the database in channel "Tal"
com.mirth.connect.connectors.jdbc.DatabaseReceiverException: Unrecognized value returned from script in channel "Tal", expected ResultSet or List<Map<String, Object>>: org.mozilla.javascript.Undefined@76ea45d7
	at com.mirth.connect.connectors.jdbc.DatabaseReceiverScript.poll(DatabaseReceiverScript.java:112)
	at com.mirth.connect.connectors.jdbc.DatabaseReceiver.poll(DatabaseReceiver.java:111)
	at com.mirth.connect.donkey.server.channel.PollConnector$PollConnectorTask.run(PollConnector.java:141)
	at java.util.TimerThread.mainLoop(Unknown Source)
	at java.util.TimerThread.run(Unknown Source)
ERROR 2019-09-13 08:28:05,267 [pool-2-thread-17603] com.mirth.connect.server.userutil.SerializerFactory: The getHL7Serializer() method is deprecated and will soon be removed. Please use the "Convert HL7 v2.x" templates from the References tab instead. Look at the tooltips to see the available property keys. The new method will strip namespaces by default unless the 'stripNamespaces' property is set to false.
ERROR 2019-09-13 08:28:12,424 [pool-2-thread-17604] com.mirth.connect.server.userutil.SerializerFactory: The getHL7Serializer() method is deprecated and will soon be removed. Please use the "Convert HL7 v2.x" templates from the References tab instead. Look at the tooltips to see the available property keys. The new method will strip namespaces by default unless the 'stripNamespaces' property is set to false.
ERROR 2019-09-13 08:28:14,049 [pool-2-thread-17603] transformer: TypeError: Cannot read property "CD47y" from undefined
ERROR 2019-09-13 08:28:14,143 [pool-2-thread-17603] com.mirth.connect.server.userutil.ResponseFactory: The getSuccessResponse(message) method is deprecated and will soon be removed. Please use getSentResponse(message) instead.
ERROR 2019-09-13 08:28:14,940 [pool-2-thread-17603] com.mirth.connect.server.controllers.DonkeyEngineController: Could not find channel to route to: 1cf4c80f-3cfc-4686-8e93-8b39b2d6b537
com.mirth.connect.donkey.server.channel.ChannelException
	at com.mirth.connect.server.controllers.DonkeyEngineController.dispatchRawMessage(DonkeyEngineController.java:511)
	at com.mirth.connect.server.userutil.VMRouter.routeMessageByChannelId(VMRouter.java:154)
	at com.mirth.connect.server.userutil.VMRouter.routeMessageByChannelId(VMRouter.java:139)
	at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)

When de logs arribe in logstash they match in a message and not in different ones for eachline that begins with the "error" and the content below.

Any idea?? Thx