diff --git a/src/API.ts b/src/API.ts
index 57afb22..a0e9b7e 100644
--- a/src/API.ts
+++ b/src/API.ts
@@ -143,10 +143,21 @@ export class UserAPI {
   };
 
   _reportError = (error: any): void => {
-    console.log(error);
+
+    const extractLineNumber = (error: Error) => {
+      const stackLines = error.stack?.split("\n");
+      if (stackLines && stackLines.length > 1) {
+        const match = stackLines[1].match(/:(\d+):/);
+        if (match) return parseInt(match[1], 10);
+      }
+      return null;
+    };
+
+    const lineNumber = extractLineNumber(error);
+    const errorMessage = lineNumber ? `${error.message} (Line: ${lineNumber})` : error.message;
     clearTimeout(this.errorTimeoutID);
     clearTimeout(this.printTimeoutID);
-    this.app.interface.error_line.innerHTML = error as string;
+    this.app.interface.error_line.innerHTML = errorMessage;
     this.app.interface.error_line.style.color = "color-red-800";
     this.app.interface.error_line.classList.remove("hidden");
     this.errorTimeoutID = setTimeout(
diff --git a/src/Evaluator.ts b/src/Evaluator.ts
index 096b16b..f6a3ba2 100644
--- a/src/Evaluator.ts
+++ b/src/Evaluator.ts
@@ -25,7 +25,7 @@ const tryCatchWrapper = (
       resolve(true);
     } catch (error) {
       application.interface.error_line.innerHTML = error as string;
-      console.log(error);
+      application.api._reportError(error as string)
       resolve(false);
     }
   });
@@ -75,7 +75,7 @@ export const tryEvaluate = async (
     }
   } catch (error) {
     application.interface.error_line.innerHTML = error as string;
-    console.log(error);
+    application.api._reportError(error as string)
   }
 };
 
diff --git a/src/WindowBehavior.ts b/src/WindowBehavior.ts
index 2ddba53..1c8f8f9 100644
--- a/src/WindowBehavior.ts
+++ b/src/WindowBehavior.ts
@@ -21,6 +21,9 @@ export const installWindowBehaviors = (
   window: Window,
   preventMultipleTabs: boolean = false
 ) => {
+
+
+
   window.addEventListener("resize", () =>
     handleResize(app.interface.scope as HTMLCanvasElement)
   );
@@ -42,7 +45,7 @@ export const installWindowBehaviors = (
     localStorage.openpages = Date.now();
     window.addEventListener(
       "storage",
-      function (e) {
+      function(e) {
         if (e.key == "openpages") {
           // Listen if anybody else is opening the same page!
           localStorage.page_available = Date.now();
@@ -57,4 +60,12 @@ export const installWindowBehaviors = (
       false
     );
   }
+
+  window.addEventListener('error', e => {
+    console.log("Je suis bien installé !")
+    console.log(e.message
+      , '\n', e.filename, ':', e.lineno, (e.colno ? ':' + e.colno : '')
+      , e.error && e.error.stack ? '\n' : '', e.error ? e.error.stack : undefined
+    );
+  }, false);
 };