I’m trying to setup intellij to give it a try but I’m having trouble getting it working with Phoenix.
I have created a new Run/Debug configuration, set my program arguments to phx.server. When I run the project using the debug button it appears to run but when I visit the page I’m greeted with the error Internal server error. The console in intellij shows this:

[info] Running WebsiteWeb.Endpoint with Cowboy using http://0.0.0.0:4000
23:22:31 - info: compiled 6 files into 2 files, copied 3 in 587 ms
[info] GET /
[debug] Processing with WebsiteWeb.PageController.index/2
  Parameters: %{}
  Pipelines: [:browser]
[info] Sent 200 in 46ms
[info] Sent 500 in 66ms
[error] #PID<0.549.0> running WebsiteWeb.Endpoint terminated
Server: 0.0.0.0:4000 (http)
Request: GET /
** (exit) {%ArgumentError{message: "argument error"}, []}

Oddly enough when I run the project using the same configuration by clicking the “run” button in intellij it works perfectly fine.

Is there something I’m missing or have misconfigured? I’d like to be able to set break points and use the debugger.