Collabora occur error failed to connect to websocket

Last week the collobora online worked for me.But today this error happen:WebSocket connection to ‘wss://’ failed: One or more reserved bits are on: reserved1 = 0, reserved2 = 1, reserved3 = 1

.Somebody has the solution?Thanks advance.

After I upgrade the collabora online plugin and docker collabora image,The gray screen come…Here is the error:

POST 404 ()

Same problem here after update to last Collabora version.