Looking at the post in News, it would be build 7001 (but the mouse-over says build 7081 and Minecraft 1.21.3).
I have tried one dev build in both directions with the same result for each.
There doesn't seem to be an obvious (to me) indication on which version of minecraft each build will work on.
Java 21
Purpur 1.21.1 build 2329 (803bf62)
Citizens 2.0.35 downloaded from Spigot
- Denizens 1.3.0 build 7001 from Jenkins
- dtlTraders 6.4.23 (free version) from Spigot
- Quests 5.1.4 from Modrinth
- Sentinel 2.9.0 build 522 from Spigot
latest.log https://paste.denizenscript.com/View/127811
Sentinel is also acting funny, saying I am using an unrecognized minecraft version, but I'm just assuming that's because I use Purpur and not Spigot
Content of Server Log Paste #127811: Denizens-1.3.0-b7002-DEV and Purpur 1.21.1... pasted 2024/11/04 23:54:47 UTC-08:00, Paste length: 46263 characters across 464 lines, Content: [07:51:17] [ServerMain/INFO]: [bootstrap] Running Java 21 (OpenJDK 64-Bit Server VM 21.0.3+9-LTS; Ec...