course save fix

src/components/courses/ManageCoursePage.js

@@ -57,9 +57,15 @@ export function ManageCoursePage({
     return Object.keys(errors).length === 0;
   }
 
+  const checkSlug = () => {
+    if (course.slug) return;
+    course.slug = course.title.replace(/\s+/g, "-").toLowerCase();
+  };
+
   function handleSave(event) {
     event.preventDefault();
     if (!formIsValid()) return;
+    checkSlug();
     setSaving(true);
     actions
       .saveCourse(course)