Update app.py

app.py

@@ -144,8 +144,10 @@ def PDFChunkerWithSeparator(filepath, separator):
             content += page.extract_text()
     elif filepath.endswith(".txt"):
         with open(filepath) as f:
-            content = f.readlines()
+            lines = f.readlines()
             f.close()
+            for line in lines:
+                content+=line
     splitted_content_list = content.split(separator)
 
     doclist = []