diff --git a/script.js b/script.js
index 0f894b0..f37fa79 100644
--- a/script.js
+++ b/script.js
@@ -174,6 +174,10 @@ function refreshFabricLikeCheckbox() {
     fabricLikeInput.disabled = !hasFabricLike;
 }
 
+function isLoaderChecked() {
+    return document.getElementById("fabric-loader-input").checked || document.getElementById("forge-loader-input").checked || document.getElementById("neoforge-loader-input").checked || document.getElementById("quilt-loader-input").checked
+}
+
 document.getElementById("generate-button").onclick = async () => {
     updateState();
 
@@ -186,6 +190,9 @@ document.getElementById("generate-button").onclick = async () => {
     } else if (state.package_name === "") {
         showError("Package name is empty");
         return;
+    } else if (!isLoaderChecked()) {
+        showError("You need to choose at least one subproject first!")
+        return
     }
 
     clearError();
diff --git a/templates/fabric/build.gradle b/templates/fabric/build.gradle
index 1a3be97..bc6f5a1 100644
--- a/templates/fabric/build.gradle
+++ b/templates/fabric/build.gradle
@@ -57,5 +57,5 @@ shadowJar {
 }
 
 remapJar {
-    input.set shadowJar.archiveFile
+    inputFile.set shadowJar.archiveFile
 }
diff --git a/templates/forge/build.gradle b/templates/forge/build.gradle
index fcc12d6..db0d926 100644
--- a/templates/forge/build.gradle
+++ b/templates/forge/build.gradle
@@ -56,5 +56,5 @@ shadowJar {
 }
 
 remapJar {
-    input.set shadowJar.archiveFile
+    inputFile.set shadowJar.archiveFile
 }
diff --git a/templates/neoforge/build.gradle b/templates/neoforge/build.gradle
index f10b8cf..17a7d1b 100644
--- a/templates/neoforge/build.gradle
+++ b/templates/neoforge/build.gradle
@@ -57,5 +57,5 @@ shadowJar {
 }
 
 remapJar {
-    input.set shadowJar.archiveFile
+    inputFile.set shadowJar.archiveFile
 }
diff --git a/templates/quilt/build.gradle b/templates/quilt/build.gradle
index 58f99f4..70def49 100644
--- a/templates/quilt/build.gradle
+++ b/templates/quilt/build.gradle
@@ -66,5 +66,5 @@ shadowJar {
 }
 
 remapJar {
-    input.set shadowJar.archiveFile
+    inputFile.set shadowJar.archiveFile
 }