Thanks for the hint. I got it back working with this:
{
“FileVersion”: 3,
“EngineAssociation”: “5.4”,
“Category”: “”,
“Description”: “”,
“Plugins”: [
{
“Name”: “ModelingToolsEditorMode”,
“Enabled”: true,
“TargetAllowList”: [
“Editor”
]
}
]
}
The project did not open with Plugin browser = true