fixed method in userRepo

Backend/.idea/workspace.xml

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               <item name="bikeProject" type="b2602c69:ProjectViewProjectNode" />
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Backend/src/main/java/com/passionProject/bikeProject/Repository/UserRepository.java

 @Repository
 public interface UserRepository extends JpaRepository<User, Long> {
 
+    User findByUsername(String username);
 }