diff --git a/src/error.rs b/src/error.rs
index 6f402cd6..7b58be33 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -17,6 +17,10 @@ pub enum SnOsError {
     Runner(CairoRunError),
     #[error("SnOs Output Error: {0}")]
     Output(String),
+    #[error(transparent)]
+    IO(#[from] std::io::Error),
+    #[error(transparent)]
+    SerdeJson(#[from] serde_json::Error),
 }
 
 #[derive(thiserror::Error, Clone, Debug)]
diff --git a/src/hints/mod.rs b/src/hints/mod.rs
index 68278f14..3309622f 100644
--- a/src/hints/mod.rs
+++ b/src/hints/mod.rs
@@ -107,9 +107,12 @@ pub fn starknet_os_input(
     ap_tracking: &ApTracking,
     _constants: &HashMap<String, Felt252>,
 ) -> Result<(), HintError> {
-    let input_path = exec_scopes.get::<String>("input_path").unwrap_or(DEFAULT_INPUT_PATH.to_string());
+    let input_path =
+        std::path::PathBuf::from(exec_scopes.get::<String>("input_path").unwrap_or(DEFAULT_INPUT_PATH.to_string()));
 
-    let os_input = Box::new(StarknetOsInput::load(&input_path));
+    let os_input = Box::new(
+        StarknetOsInput::load(&input_path).map_err(|e| HintError::CustomHint(e.to_string().into_boxed_str()))?,
+    );
     exec_scopes.assign_or_update_variable("os_input", os_input);
 
     let initial_carried_outputs_ptr = get_ptr_from_var_name("initial_carried_outputs", vm, ids_data, ap_tracking)?;
diff --git a/src/io/mod.rs b/src/io/mod.rs
index 0f4503dc..608f9652 100644
--- a/src/io/mod.rs
+++ b/src/io/mod.rs
@@ -34,15 +34,17 @@ pub struct StarknetOsInput {
 }
 
 impl StarknetOsInput {
-    pub fn load(path: &str) -> Self {
-        let raw_input = fs::read_to_string(path::PathBuf::from(path)).unwrap();
-        serde_json::from_str(&raw_input).unwrap()
+    pub fn load(path: &path::Path) -> Result<Self, SnOsError> {
+        let raw_input = fs::read_to_string(path)?;
+        let input = serde_json::from_str(&raw_input)?;
+
+        Ok(input)
     }
-    pub fn dump(&self, path: &str) -> Result<(), SnOsError> {
-        fs::File::create(path)
-            .unwrap()
-            .write_all(&serde_json::to_vec(&self).unwrap())
-            .map_err(|e| SnOsError::CatchAll(format!("{e}")))
+
+    pub fn dump(&self, path: &path::Path) -> Result<(), SnOsError> {
+        fs::File::create(path)?.write_all(&serde_json::to_vec(&self)?)?;
+
+        Ok(())
     }
 }
 
diff --git a/tests/common/mod.rs b/tests/common/mod.rs
index d2e0be00..283f56c3 100644
--- a/tests/common/mod.rs
+++ b/tests/common/mod.rs
@@ -32,7 +32,7 @@ pub fn load_and_write_input() {
 #[fixture]
 #[once]
 pub fn load_input(_load_and_write_input: ()) -> StarknetOsInput {
-    StarknetOsInput::load(DEFAULT_INPUT_PATH)
+    StarknetOsInput::load(std::path::Path::new(DEFAULT_INPUT_PATH)).unwrap()
 }
 
 #[fixture]