Update app.py

app.py

@@ -9,13 +9,12 @@ from urllib.request import urlretrieve
 import os
 
 FONT_DIR = "/tmp/fonts"
-FONT_PATH = os.path.join(FONT_DIR, "DejaVuSans.ttf")
+FONT_PATH = os.path.join(FONT_DIR, "NotoSans-Regular.ttf")
 
-# Create font dir and download font only if needed
 os.makedirs(FONT_DIR, exist_ok=True)
 if not os.path.exists(FONT_PATH):
     urlretrieve(
-        "https://github.com/dejavu-fonts/dejavu-fonts/raw/master/ttf/DejaVuSans.ttf",
+        "https://github.com/google/fonts/raw/main/ofl/notosans/NotoSans-Regular.ttf",
         FONT_PATH
     )
 
@@ -35,8 +34,8 @@ def generate_pdf_from_chat(chat_history):
     pdf.add_page()
 
     # Register Unicode font
-    pdf.add_font("DejaVu", "", FONT_PATH, uni=True)
-    pdf.set_font("DejaVu", size=12)
+    pdf.add_font("NotoSans", "", FONT_PATH, uni=True)
+    pdf.set_font("NotoSans", size=12)
     pdf.set_auto_page_break(auto=True, margin=15)
 
     # Add the text safely