fix: pandoc

app.py

@@ -60,7 +60,11 @@ def extract_metadata_from_pdf(reader):
 def convert_pandoc(input_file):
     # Convert the file to markdown with pandoc
     output_file = f"{random_word(16)}.md"
-    result = subprocess.call(f"pandoc {input_file} -t markdown -o {output_file}")
+    result = subprocess.call(
+        ["pandoc", input_file, "-t", "markdown", "-o", output_file]
+    )
+    if result != 0:
+        raise ValueError("Error converting file to markdown with pandoc")
 
     # Read the file and delete
     with open(output_file, "r") as f: