[bug] Hosted Gorilla: <Issue>No module named 'langchain_experimental.text_splitter'

[bennyji]

Describe the bug
when I run RAFT：
python3 raft.py --datapath sample_data/United_States_PDF.pdf --output ./sample_ds4 --distractors 4 --doctype pdf --chunk_size 512 --questions 5 --openai_key OPENAI_KEY
there is an error：

Traceback (most recent call last):
  File "raft.py", line 9, in <module>
    from langchain_experimental.text_splitter import SemanticChunker
ModuleNotFoundError: No module named 'langchain_experimental.text_splitter'

To Reproduce
Steps to reproduce the behavior:
langchain 0.0.354
langchain-community 0.0.20
langchain-core 0.1.23
langchain-experimental 0.0.47
langchain-openai 0.0.6
langcodes 3.3.0
langdetect 1.0.9

[kaiwen129]

Hi! Please make sure to run pip install -r requirements.txt in the raft directory to install dependencies before running the script.