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lib/something_erlang/grover.ex

@@ -5,10 +5,17 @@ defmodule SomethingErlang.Grover do
   require Logger
 
   def mount(user) do
-    DynamicSupervisor.start_child(
-      SomethingErlang.Supervisor.Grovers,
-      {__MODULE__, [self(), user]}
-    )
+    grover =
+      DynamicSupervisor.start_child(
+        SomethingErlang.Supervisor.Grovers,
+        {__MODULE__, [self(), user]}
+      )
+
+    case grover do
+      {:ok, pid} -> pid
+      {:error, {:already_started, pid}} -> pid
+      {:error, error} -> {:error, error}
+    end
   end
 
   def get_thread!(thread_id, page_number) do