[Erreur de chargement : "An error occured running the Unity content [...] Could not close websocket."]

idem chez moi depuis le 27/12 aussi,sur firefox, chrome ou edge sous Windows 10 ou Linux Debian bullseye pareil...

La console du navigateur firefox donne :

Error: _initWorker called too early! Please read the session file from disk first. SessionFile.jsm:375:15
uncaught exception: Object
NS_ERROR_FILE_ACCESS_DENIED 3 SimpleServices.jsm:138
debuggee 'resource://devtools/shared/base-loader.js:289' would run builtin-modules.js:196:11

et la console web :

Content Security Policy: Les paramètres de la page ont empêché le chargement d’une ressource à inline (« script-src »). 5 utils.js:35:9
writeStringToMemory is deprecated and should not be called! Use stringToUTF8() instead! UnityLoader.js:4:9478
    printErr www.www.virtualregatta.com/wp-content/uploads/vro/Game/20201223-342/Build/UnityLoader.js?ver=1.2:4
    warnOnce blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d:2
    writeStringToMemory blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d:2
    _GSGetDeviceId blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d:2
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:12547947
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:12526859
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:12537111
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:12546862
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:12244592
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:27032234
    dynCall_iiiii blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d:2
    invoke_iiiii blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d:2
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:26625601
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:26694810
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:1886646
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:1886498
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:2688361
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:2685090
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:3924286
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:2920464
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:4263654
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:3962741
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:3962762
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:3959616
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:3953258
    <anonyme> blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d line 2 > WebAssembly.instantiate:27033204
    dynCall_v blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d:2
    browserIterationFunc blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d:2
    runIter blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d:2
    Browser_mainLoop_runner blob:www.www.virtualregatta.com/b5da73b4-d7b0-48fc-aad0-c40c6143d89d:2