rework tera instantiation

src/main.rs

@@ -18,7 +18,7 @@ async fn main() {
 
 async fn index() -> impl IntoResponse {
     // Create a new Tera instance and add a template from a string
-    let tera = Tera::new("templates/**/*").unwrap();
+    let tera = tera_create();
     // Prepare the context with some data
     let context = tera::Context::new();
 
@@ -29,7 +29,7 @@ async fn index() -> impl IntoResponse {
 }
 
 async fn search(Query(params): Query<HashMap<String, String>>) -> impl IntoResponse {
-    let tera = Tera::new("templates/**/*").unwrap();
+    let tera = tera_create();
     // Prepare the context with some data
     let mut context = tera::Context::new();
     context.insert("query", params.get("q").unwrap());
@@ -39,6 +39,18 @@ async fn search(Query(params): Query<HashMap<String, String>>) -> impl IntoRespo
     header(rendered)
 }
 
+fn tera_create() -> Tera {
+    let tera = match Tera::new("templates/**/*.html") {
+        Ok(tera) => tera,
+        Err(error) => {
+            println!("Parsing error(s): {}", error);
+            ::std::process::exit(1);
+        }
+    };
+
+    tera
+}
+
 fn header(rendered: impl ToString) -> impl IntoResponse {
     (
         [(header::CONTENT_TYPE, "text/html; charset=utf-8")],