404 no found with example test

[SubtleTom]

we tested the example but could not visit the localhost with error number 404.
details are as follow:

I0429 10:49:59.981257 11980 logging_logger.py:45] Constructing tf.data.Dataset glue for split validation, from ~\tensorflow_datasets\glue\sst2\2.0.0
I0429 10:49:59.981257 11980 logging_logger.py:45] Constructing tf.data.Dataset glue for split validation, from ~\tensorflow_datasets\glue\sst2\2.0.0
2022-04-29 10:50:00.045397: I tensorflow/compiler/mlir/mlir_graph_optimization_pass.cc:185] None of the MLIR Optimization Passes are enabled (registered 2)
I0429 10:50:00.227182 11980 dataset_builder.py:867] No config specified, defaulting to first: imdb_reviews/plain_text
I0429 10:50:00.227182 11980 dataset_builder.py:867] No config specified, defaulting to first: imdb_reviews/plain_text
I0429 10:50:00.228179 11980 dataset_info.py:482] Load dataset info from \tensorflow_datasets\imdb_reviews\plain_text\1.0.0
I0429 10:50:00.228179 11980 dataset_info.py:482] Load dataset info from \tensorflow_datasets\imdb_reviews\plain_text\1.0.0
I0429 10:50:00.231178 11980 dataset_builder.py:366] Reusing dataset imdb_reviews (\tensorflow_datasets\imdb_reviews\plain_text\1.0.0)
I0429 10:50:00.231178 11980 dataset_builder.py:366] Reusing dataset imdb_reviews (\tensorflow_datasets\imdb_reviews\plain_text\1.0.0)
I0429 10:50:00.231178 11980 logging_logger.py:45] Constructing tf.data.Dataset imdb_reviews for split test, from ~\tensorflow_datasets\imdb_reviews\plain_text\1.0.0
I0429 10:50:00.231178 11980 logging_logger.py:45] Constructing tf.data.Dataset imdb_reviews for split test, from ~\tensorflow_datasets\imdb_reviews\plain_text\1.0.0
I0429 10:50:03.855530 11980 lm_demo.py:123] Dataset: 'sst_dev' with 872 examples
I0429 10:50:03.855530 11980 lm_demo.py:123] Dataset: 'sst_dev' with 872 examples
I0429 10:50:03.856530 11980 lm_demo.py:123] Dataset: 'imdb_train' with 1000 examples
I0429 10:50:03.856530 11980 lm_demo.py:123] Dataset: 'imdb_train' with 1000 examples
I0429 10:50:03.856530 11980 lm_demo.py:123] Dataset: 'blank' with 0 examples
I0429 10:50:03.856530 11980 lm_demo.py:123] Dataset: 'blank' with 0 examples
I0429 10:50:03.857529 11980 dev_server.py:88]
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I0429 10:50:03.881873 11980 wsgi_serving.py:43]

Starting Server on port 5432
You can navigate to 127.0.0.1:5432

I0429 10:50:03.886013 11980 _internal.py:224] * Running on http://127.0.0.1:5432 (Press CTRL+C to quit)
I0429 10:50:03.886013 11980 _internal.py:224] * Running on http://127.0.0.1:5432 (Press CTRL+C to quit)
W0429 10:51:14.825967 11980 wsgi_app.py:55] IOError [Errno 2] No such file or directory: 'D:\lit-main\lit_nlp\client\build\default\static/index.html' on path D:\lit-main\lit_nlp\client\build\default\static/index.html
W0429 10:51:14.825967 11980 wsgi_app.py:55] IOError [Errno 2] No such file or directory: 'D:\lit-main\lit_nlp\client\build\default\static/index.html' on path D:\lit-main\lit_nlp\client\build\default\static/index.html
I0429 10:51:14.827513 11980 wsgi_app.py:145] path D:\lit-main\lit_nlp\client\build\default\static/index.html not found, sending 404
I0429 10:51:14.827513 11980 wsgi_app.py:145] path D:\lit-main\lit_nlp\client\build\default\static/index.html not found, sending 404
I0429 10:51:14.827513 11980 _internal.py:224] 127.0.0.1 - - [29/Apr/2022 10:51:14] "GET / HTTP/1.1" 404 -
I0429 10:51:14.827513 11980 _internal.py:224] 127.0.0.1 - - [29/Apr/2022 10:51:14] "GET / HTTP/1.1" 404 -

but the file"index.html" has already been in the path, please help me to solve the problem, thanks! #11 not work