Publishing in Error in value[[3L]](cond) : object 'maptools' not found

I'm trying to publish my shiny app, but there are an error message : Error in value[3L] : there is no package called 'maptools'

My data and packages are in the server section, but shiny can't found the package:

PD: Reprex don't work for me with my shiny code.

Thank you.