Update app.py

app.py

@@ -43,7 +43,7 @@ def chunk(text, length, splitter_selection, separators_str, length_unit_selectio
             length_function=length_function,
             strip_whitespace=False,
             is_separator_regex=False,
-            separator="",
+            separator=" ",
         )
     elif splitter_selection == LABEL_RECURSIVE:
         text_splitter = RecursiveCharacterTextSplitter(
@@ -118,7 +118,7 @@ with gr.Blocks(theme=gr.themes.Soft(), css="#textbox_id {color: red; font-samily
         )
         separator_selection = gr.Textbox(
             elem_id="textbox_id",
-            value=["\n### ", "\n\n", "\n", ".", " ", ""],
+            value=["\n### ", "\n\n", "\n", ".", " "],
             info="Separators used in RecursiveCharacterTextSplitter",
             show_label=False, # or set label to an empty string if you want to keep its space
             visible=False,