diff --git a/web/lib/build.mjs b/web/lib/build.mjs
index b166a193..b370c288 100644
--- a/web/lib/build.mjs
+++ b/web/lib/build.mjs
@@ -121,7 +121,7 @@ const emitTypeScript = () => {
     });
 
     if (child.status !== 0) {
-        console.error("Failed to execute tsc")
+        throw new Error("Failed to execute tsc")
     }
 }
 
@@ -154,7 +154,7 @@ const wasmPack = () => {
     });
 
     if (cargo.status !== 0) {
-        console.error("Failed to execute cargo build")
+        throw new Error("Failed to execute cargo build")
     }
 
     let wasmbindgen = spawnSync('wasm-bindgen', [
@@ -170,7 +170,7 @@ const wasmPack = () => {
     });
 
     if (wasmbindgen.status !== 0) {
-        console.error("Failed to execute wasm-bindgen")
+        throw new Error("Failed to execute wasm-bindgen")
     }
 
     if (release) {
@@ -186,10 +186,9 @@ const wasmPack = () => {
         });
 
         if (wasmOpt.status !== 0) {
-            console.error("Failed to execute wasm-opt")
+            throw new Error("Failed to execute wasm-opt")
         }
     }
-
 }
 
 const watchResult = async (result) => {
@@ -260,4 +259,8 @@ const start = async () => {
     emitTypeScript();
 }
 
-const _ = start()
+try {
+    const _ = start()
+} catch (e) {
+    console.log("Failed to start building: " + e.message)
+}