Thank you for confirming the issue is resolved by doing the below steps.
Actions Taken
By changing my system's regional settings to en-US.
$env:DOTNET_SYSTEM_GLOBALIZATION_INVARIANT = 1
Import-Module "$env:ProgramFiles\Azure Cosmos DB Emulator\PSModules\Microsoft.Azure.CosmosDB.Emulator" $startEmulatorCmd = "Start-CosmosDbEmulator -EnableGremlin -GremlinPort 65400" Invoke-Expression -Command $startEmulatorCmd
Reference: https://github.com/Azure/cosmos-explorer/issues/1860
Please don't forget to mark as accept answer so this will be easily found by community members with the same question.
Regards,
Oury