Lot of logs export to CSV fails with an empty file

I have a Debian 10 with Graylog 3.3.8 for a syslog server implementation.

When I search for a short period of time, I can download succesfully the result in CSV format.

But when I repeat the same search for one day or more, the export ends with an empty CSV file.

My environment is comformed by:
SO: Debian 10.6
Package Version: Graylog 3.3.8

My default Java options for heap and garbage collection are:

GRAYLOG_SERVER_JAVA_OPTS=“-Xms12g -Xmx12g -XX:NewRatio=1 -server -XX:+ResizeTLAB -XX:+UseConcMarkSweepGC -XX:+CMSConcurrentMTEnabled -XX:+CMSClassUnloadingEnabled -XX:-OmitStackTraceInFastThrow”

I can’t see any relative log in graylog nor elasticsearch, oe maybe I search in a bad way.

Please, can you help me? Is there any way to get the CSV exported file with all the results in case they are plenty a lot?

Thanks in advance, regards!

Are you able to see all the results in the sesrch page, may have to go back a few pages etc?

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