diff --git a/src/utils.rs b/src/utils.rs
new file mode 100644
index 0000000..e82d417
--- /dev/null
+++ b/src/utils.rs
@@ -0,0 +1,15 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub enum ProblemType {
+    VariableNotFound,
+    FileNotFound,
+    HeaderSyntaxError,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct Problem {
+    //pub code: u32,
+    pub problem_type: ProblemType,
+    pub problem_msg: String,
+}