Raspbian - Permission Denied when broadcasting message

I am using the Elixir/ Erlang package on raspbian to try and build a simple UDP send/receive app. For information, I am using [this tutorial](https://bgmarx.com/2019/05/05/sending-and-receiving-udp/) . When I try to send the UDP packet to the network on the broadcast IP address given to my eth0 interface, I am getting a "Permission denied" message. Is it really not allowed to broadcast UDP messages to the network from linux? And if so, how to give permission to a specific package to broadcast messages? I have tested it with localhost IP address 127.0.0.1 and I am getting no error.