Error while communicating with the LS - stubborn problem

My Julia LS will not start on two machinesI am using to run a model with work - I get a pop up ‘Error while communicating with the LS’.

When I check the output for Julia Language Server I get a readout about a possibly stale pidfile. I have tried deleting this and hoping it would reset, but then the loading gets stuck halfway through and the LS never starts. When I initiating our model on another machine from scratch, I went to run it through Julia REPL and the exact same issue is occuring.

I have read other posts here about using juliaup release, for example, and none of them have worked. Does anyone have any insight here?