Interactive R visual working on desktop but not service

I have developed a visual using ggplot2 and plotly. It works like a charm on desktop ...

But when I upload the report the tooltips are reverted back to default settings

This is the code I am using

p = ggplotly(g) 

# some plotly re-design 
hoverconfig<-list(
  bgcolor= "#333333",
  bordercolor="#333333",
  font = list(
    color="#c1c1c1"
  )
)
p <- layout(p,hoverlabel=hoverconfig)

# save HTML with predefined name 
internalSaveWidget(p, 'out.html')

Any ideas on how I can fix this?