Update app.py

app.py

@@ -11,6 +11,7 @@ import base64
 import tempfile
 from reportlab.pdfgen import canvas
 from reportlab.lib.pagesizes import letter
+from reportlab.lib.fonts import registerFont, findFontPath, getFontNames
 from PyPDF2 import PdfReader, PdfWriter
 
 from hugchat import hugchat
@@ -24,7 +25,7 @@ from langchain.document_loaders.blob_loaders.youtube_audio import YoutubeAudioLo
 from langchain.document_loaders.generic import GenericLoader
 from langchain.document_loaders.parsers import OpenAIWhisperParser
 from langchain.schema import AIMessage, HumanMessage
-from langchain.llms import HuggingFaceHub
+from langchain.llms import HuggingFaceHub, HuggingFaceChain
 from langchain.llms import HuggingFaceTextGenInference
 from langchain.embeddings import HuggingFaceInstructEmbeddings, HuggingFaceEmbeddings, HuggingFaceBgeEmbeddings, HuggingFaceInferenceAPIEmbeddings
 from langchain.retrievers.tavily_search_api import TavilySearchAPIRetriever
@@ -44,7 +45,7 @@ from beschreibungen import *
 from dotenv import load_dotenv, find_dotenv
 _ = load_dotenv(find_dotenv())
 
-
+registerFont(TTFont('DejaVuSerif', './DejaVuSerif.ttf'))
 
 ###############################################
 #globale Variablen