Undefined is not an object (evaluating 'window.Stimulus.load')

I have a rails application that is working in most situations. However, if I am using a device that is using iOS 16.3 or earlier I get the following error:

TypeError: undefined is not an object (evaluating ‘window.Stimulus.load’)

Are there known issues with versions of iOS 16.3 or earlier?
Has anyone else encountered anything similar?
I am using @hotwired/stimulus@^3.2.2 with @hotwired/stimulus-webpack-helpers@^1.0.0

Thanks in advance.
John