Fix prefix space

app.py

@@ -16,7 +16,8 @@ def generate(tokenizer_id, num_tokens, prefix=None, source_text=None):
     output_path = Path(f"prompt_{num_tokens}.jsonl")
     if output_path.exists():
         output_path.unlink()
-
+    if prefix == "":
+        prefix = None
     prompt = generate_prompt(
         tokenizer_id, int(num_tokens), prefix=prefix, source_text=source_text, output_file=output_path
     )

requirements.txt

@@ -1,3 +1,4 @@
 transformers
 sentencepiece
+protobuf
 git+https://github.com/helena-intel/test-prompt-generator.git