Recently I Imported 2.18.0 EssentialX, Chat, & Spawn had an extreme memory leak. I would love to screen shot the issue, but I don't want to do that to my server again. It was maxing out the RAM usage and failing to communicate with user authenticator. For the mean time I went back to 2.17.2 Stable version.

Current Server Information
[22:49:47 INFO]: Server version: 1.16.1-R0.1-SNAPSHOT git-Spigot-9639cf7-8fb6585 (MC: 1.16.1)
[22:49:47 INFO]: EssentialsX version: 2.17.2.12
[22:49:47 INFO]: PlaceholderAPI version: 2.9.2
[22:49:47 INFO]: PermissionsEx version: 1.23.4
[22:49:47 INFO]: Vault version: 1.7.3-b131
[22:49:47 INFO]: Citizens version: 2.0.27-SNAPSHOT (build 2056)
[22:49:47 INFO]: EssentialsXChat version: 2.17.2.12
[22:49:47 INFO]: EssentialsXSpawn version: 2.17.2.12
[22:49:47 INFO]: ChestShop version: 3.11 (build 213)
[22:49:47 INFO]: You are running unsupported plugins!
[22:49:47 INFO]: You are running an unsupported server version!

2.18.0 is not the latest EssentialsX version. Try out the latest build at https://ci.ender.zone/job/EssentialsX/lastSuccessfulBuild
or https://essentialsx.net/downloads.html

I highly doubt this is Essentials as no other users have reported such a problem. Please follow the issue template and resubmit your issue.

@l1ttleO Updated essentials worked @JRoy Looks like the build was unstable for the version I had