Rangemap - Fatal error


I have a problem with the rangemap package. I'm looking to form a concave hull around ten points in Africa but when I run the code, as follows :

I have a "fatal error" message displayed and R restarting a new session. I'm really lost, I really hope someone can help me!


To help us help you, could you please prepare a reproducible example (reprex) illustrating your issue? Please have a look at this guide, to see how to create one:

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