update file 020

app.py

@@ -8,7 +8,7 @@ import uuid
 import sqlite3
 import csv
 import zipfile
-from io import BytesIO
+from io import StringIO
 
 app = Flask(__name__)
 
@@ -176,13 +176,17 @@ def export_csv():
     rows = c.fetchall()
     conn.close()
 
-    output = BytesIO()
+    # Use StringIO here
+    output = StringIO()
     writer = csv.writer(output)
     writer.writerow(["ID", "First Name", "Last Name", "Email", "Issue", "Priority", "Date", "Generated"])
     writer.writerows(rows)
 
+    # Encode string to bytes before returning
     output.seek(0)
-    return Response(output, mimetype="text/csv", headers={"Content-Disposition": "attachment;filename=tickets.csv"})
+    return Response(output.getvalue(), mimetype="text/csv",
+                    headers={"Content-Disposition": "attachment;filename=tickets.csv"})
+
 
 @app.route("/export/zip")
 def export_zip():