Hi @huy_mai,
MongoDB 3.4.5 (released in June 2017) is 2 1/2 years older than 3.4.24 (the final release of the 3.4 series, in January 2020). See Release Notes for MongoDB 3.4 for more details.
Since there have been several years of bug fixes and improvements with no backward-breaking compatibility changes in minor releases, upgrading to the final 3.4.24 release would be a recommended starting point.
Ideally you should plan and test upgrading to a supported server release series (currently MongoDB 4.0 or newer) so your MongoDB software continues to get maintenance fixes including security updates.
Regards,
Stennie