REST API request works in Postman but I get a Timeout with curl

Hello all,
I try to get the list of our Jira user using REST
I tried my request in Postman and it works fine.
But when I use this request in my application or with curl, I get a timeout error…
Do you know why?

my curl command is:
curl -L -X GET https://mycompany.atlassian.net/rest/api/3/users -H “Content-Type:application/json” -H “Accept:application/json” -H “Authorization:Basic xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx”

Thanks in advance
Vincent