Remove target field from error logging macro

src/environment.rs

@@ -8,7 +8,7 @@ pub fn get_env_variable(var_name: &str) -> String {
     match env::var(var_name) {
         Ok(v) => v,
         Err(_) => {
-            error!(target: "bot_warn_errors", "Failed to fetch the {} environment variable.", var_name);
+            error!("Failed to fetch the {} environment variable.", var_name);
             panic!("Exiting...");
         }
     }