[IMP] update files to backward compatability

app.py

@@ -28,7 +28,8 @@ retriever = None
 def handle_files_and_query(query, files, chunk_overlap=50, token_per_chunk=256, bm_25_answers=200, translate_to_ru=False):
     results = ""
     global prev_files, retriever
-    files = [f.name for f in files]
+    if not (isinstance(files, str) or isinstance(files[0], str)):
+        files = [f.name for f in files]
     if files is not None and files != prev_files:
         documents = []
         prev_files = files
@@ -70,7 +71,7 @@ interface = gr.Interface(
     fn=handle_files_and_query,
     inputs=[
         gr.Textbox(lines=1, label="Enter your search query here..."),
-        gr.File(file_count="multiple", type="file", file_types=[".pdf"], label="Upload a file here."),
+        gr.File(file_count="multiple", type="filepath", file_types=[".pdf"], label="Upload a file here."),
         gr.Slider(minimum=1, maximum=100, value=50, label="Chunk Overlap"),
         gr.Slider(minimum=64, maximum=512, value=256, label="Tokens Per Chunk (чем больше - тем бОльшие куски книги "
                                                             "сможем находить)"),