There is a custom dashboard which uses views that allow a user to click on a metric and go to the "metric analysis" page. There is 1 known user who cannot get the page to display. Other users do not have a problem.
The below error is in the server logs.
The value for a pixel is an integer but using browser zoom in/out may change the value to other value which can't be parsed by Foglight, then the exception occurs.
The zoom was set to 105%.
Set the zoom in IE to the default value (100%).