From your log
java.lang.RuntimeException: Actor: Pp
| Qz: attack
| Qz: skill
at dz.D(SourceFile:202)
at dz.D(SourceFile:152)
at fQ.L(SourceFile:224)
at fQ.D(SourceFile:52)
at eZ.D(SourceFile:118)
at fw.D(SourceFile:88)
at dF.D(SourceFile:59)
at dH.B(SourceFile:351)
at LPT5.B(SourceFile:124)
at com6.D(SourceFile:360)
at nuL.run(SourceFile:259)
at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.desktop/java.awt.EventQueue.access$600(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.RuntimeException: Slot [slot: shandianqiu, bone: shandianqiu] not found in skeleton: hero_1401_zhousi
at Hi.D(SourceFile:1228)
at Ga.D(SourceFile:217)
at FZ.D(SourceFile:57)
at GD.B(SourceFile:299)
at GD.D(SourceFile:515)
at com.esotericsoftware.spine.editor.Editor.B(SourceFile:813)
at ue.D(SourceFile:1469)
at Pp.D(SourceFile:1066)
at Qw.D(SourceFile:68)
at fu.D(SourceFile:28)
at dz.D(SourceFile:188)
... 24 more
It appears the project you are trying to import is corrupted/incomplete. Spine 3.8.99 can not deal with this and crashes. Try loading the project in a newer Spine version. Note that if you've saved this project with Spine > 3.8.99, then you can not load it in Spine 3.8.99. I don't think that is the case here, as Spine 3.8.99 would show a dialog telling you that there is a version mismatch.
Are you loading a .spine file or are you trying to import .skel or .json?
