Failed to find function dmlab_connect in library! RuntimeError: Failed to connect RL API

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hi,I used Git to clone episodic-curiosity and DeepMind Lablocally as required and tested DMlab with bazel run :python_random_agent command, but there is no problem and it can run.

But when I apply our patch to DeepMind Lab:

git checkout 7b851dc
git checkout -b modified_dmlab
git apply ../third_party/dmlab/dmlab_min_goal_distance.patch

Error Failed to find function dmlab_connect in library! RuntimeError: Failed to connect RL API occurs when I run command bazel run :python_random_agent again.

I have checked that the runfile directory is wrong but I don't know how to set it.
Deepmind Lab. set Runfiles path(path) is also mentioned in the Python API
My configuration environment：
Ubuntu 16.04
Anaconda3
python3.6
I hope you can help me because it means a lot to me