caixin
As noted on our versioning page:
The major and minor version of the Spine editor used to export JSON or binary data must always match the Spine Runtimes version.
From what I understand, pixi-miniprogram is a library that allows you to run Pixi inside WeChat. According to its GitHub page, it uses an outdated version of pixi-spine that only supports Spine 3.8 exports.
You cannot use Spine 4.2 assets with a 3.8 runtime.
Additionally, as Spinebot mentioned, pixi-spine is not our official runtime. Its latest version supports assets up to Spine 4.1 only.
For official support, we provide spine-pixi-v7 for Pixi v7 and spine-pixi-v8 for Pixi v8—both compatible only with Spine 4.2 exports (documentation here).
You could try exporting your assets to an older Spine version, but some features may not work correctly.
Unfortunately, we can’t help in this case. You might consider reaching out to the pixi-miniprogram maintainers to ask them to update both Pixi and the Spine runtime to the latest versions.
