Project fails to load

@merryman is already working on this.

Since Jan 6, 2025.

**Describe the bug**
The project https://github.com/engageLively/galyleo-dashboard fails to load. The error message in the console is:
```
__rootModule___commonjs-entry-35de395a.js:20060 Error deserializing property master of ("__lv_expr__:{Polygon,Morph}:lively.morphic/morph.js:{pt}:lively.graphics/geometry-2d.js:{part}:lively.morphic:{LandingPage}:lively.freezer/src/landing-page.cp.js:{PolicyApplicator}:lively.morphic/components/policy.js:new PolicyApplicator({\n name: 'background',\n position: Symbol.for(\"lively.skip-property\"),\n scale: Symbol.for(\"lively.skip-property\"),\n submorphs: [{\n name: 'triangle 1',\n styleClasses: ['Polygon', 'Path', 'Morph', 'morph'],\n vertices: [({position:pt(723.4989,0),isSmooth:false,controlPoints:{next:pt(0,0),previous:pt(0,0)}}),({position:pt(728.6,1002.1149),isSmooth:false,controlPoints:{next:pt(0,0),previous:pt(0,0)}}),({position:pt(0,1003.9),isSmooth:false,controlPoints:{next:pt(0,0),previous:pt(0,0)}})]\n}, {\n name: 'triangle 2',\n styleClasses: ['Polygon', 'Path', 'Morph', 'morph'],\n vertices: [({position:pt(0,0),isSmooth:false,controlPoints:{next:pt(0,0),previous:pt(0,0)}}),({position:pt(1198.6,392.0192),isSmooth:false,controlPoints:{next:pt(0,0),previous:pt(0,0)}}),({position:pt(259.7772,1159.7),isSmooth:false,controlPoints:{next:pt(0,0),previous:pt(0,0)}})]\n}, {\n name: 'triangle 3',\n styleClasses: ['Polygon', 'Path', 'Morph', 'morph'],\n vertices: [({position:pt(0,0),isSmooth:false,controlPoints:{next:pt(0,0),previous:pt(0,0)}}),({position:pt(1915.5,788.6),isSmooth:false,controlPoints:{next:pt(0,0),previous:pt(0,0)}}),({position:pt(1047.2533,788.3092),isSmooth:false,controlPoints:{next:pt(0,0),previous:pt(0,0)}})]\n}]\n}, LandingPage.stylePolicy.getSubSpecAt([\"background\"]))")
ObjectRef_recreatePropertyAndSetProperty_ @ __rootModule___commonjs-entry-35de395a.js:20060
LivelyClassPropertiesPlugin_additionallyDeserializeBeforeProperties_ @ __rootModule___commonjs-entry-35de395a.js:19357
ObjectPool_plugin_additionallyDeserializeBeforeProperties_ @ __rootModule___commonjs-entry-35de395a.js:19770
ObjectRef_recreateObjFromSnapshot_ @ __rootModule___commonjs-entry-35de395a.js:20019
ObjectRef_fromSnapshot_ @ __rootModule___commonjs-entry-35de395a.js:20101
ObjectPool_readSnapshot_ @ __rootModule___commonjs-entry-35de395a.js:19668
ObjectPool_resolveFromSnapshotAndId_ @ __rootModule___commonjs-entry-35de395a.js:19684
(anonymous) @ __rootModule___commonjs-entry-35de395a.js:25141
step2 @ __rootModule___commonjs-entry-35de395a.js:25166
(anonymous) @ __rootModule___commonjs-entry-35de395a.js:25163
(anonymous) @ __rootModule___commonjs-entry-35de395a.js:49386
(anonymous) @ __rootModule___commonjs-entry-35de395a.js:49395
Morph_copy_ @ __rootModule___commonjs-entry-35de395a.js:55356
_callee9$ @ bootstrap-854a4a25.js:1063
tryCatch @ deps.js:722
invoke @ deps.js:950
(anonymous) @ deps.js:777
asyncGeneratorStep @ __rootModule___commonjs-entry-35de395a.js:48
_next @ __rootModule___commonjs-entry-35de395a.js:70
Promise.then
asyncGeneratorStep @ __rootModule___commonjs-entry-35de395a.js:58
_next @ __rootModule___commonjs-entry-35de395a.js:70
Promise.then
asyncGeneratorStep @ __rootModule___commonjs-entry-35de395a.js:58
_next @ __rootModule___commonjs-entry-35de395a.js:70
(anonymous) @ __rootModule___commonjs-entry-35de395a.js:77
(anonymous) @ __rootModule___commonjs-entry-35de395a.js:66
onRenderStart @ bootstrap-854a4a25.js:1091
MorphicEnv_setWorldRenderedOn_ @ __rootModule___commonjs-entry-35de395a.js:47584
MorphicEnv_setWorld_ @ __rootModule___commonjs-entry-35de395a.js:47555
_callee5$ @ __rootModule___commonjs-entry-35de395a.js:78101
tryCatch @ deps.js:722
invoke @ deps.js:950
(anonymous) @ deps.js:777
asyncGeneratorStep @ __rootModule___commonjs-entry-35de395a.js:48
_next @ __rootModule___commonjs-entry-35de395a.js:70
Promise.then
asyncGeneratorStep @ __rootModule___commonjs-entry-35de395a.js:58
_next @ __rootModule___commonjs-entry-35de395a.js:70
Promise.then
asyncGeneratorStep @ __rootModule___commonjs-entry-35de395a.js:58
_next @ __rootModule___commonjs-entry-35de395a.js:70Understand this errorAI
__rootModule___commonjs-entry-35de395a.js:78120 Error loading world: TypeError: Cannot read properties of null (reading 'setState')
at ShapeMorpher.ShapeMorpher_viewDidLoad_ (landing-page.cp-f59ae217.js:49556:30)
at ShapeMorpher.ViewModel_attach_ (__rootModule___commonjs-entry-35de395a.js:59349:18)
at Morph.Morph___after_deserialize___ (__rootModule___commonjs-entry-35de395a.js:53098:30)
at AdditionallySerializePlugin.AdditionallySerializePlugin_additionallyDeserializeAfterProperties_ (__rootModule___commonjs-entry-35de395a.js:19141:22)
at ObjectPool.ObjectPool_plugin_additionallyDeserializeAfterProperties_ (__rootModule___commonjs-entry-35de395a.js:19781:17)
at ObjectRef.ObjectRef_recreateObjFromSnapshot_ (__rootModule___commonjs-entry-35de395a.js:20035:18)
at Function.ObjectRef_fromSnapshot_ (__rootModule___commonjs-entry-35de395a.js:20101:47)
at ObjectPool.ObjectPool_readSnapshot_ (__rootModule___commonjs-entry-35de395a.js:19668:48)
at ObjectPool.ObjectPool_resolveFromSnapshotAndId_ (__rootModule___commonjs-entry-35de395a.js:19684:18)
at Object.deserialize (__rootModule___commonjs-entry-35de395a.js:25141:24)
```

**To Reproduce**
It's not clear that this can be reproduced. After it failed, I attempted to reload with `Pause on uncaught exceptions` set, and it worked. Presumably the previous load attempt had fixed whatever was mangled in the file.

**Screenshots**

**Setup**
Please delete non-applicable items!

- Windows
- Linux

**Version**: Please paste the lively.next commit on which the problem occurred here (use the copy button of the Version Checker in the bottom left corner).
154aad128403ef1d7b29332cc5449fb7a6f4a549