nohup: appending output to 'nohup.out'
[W 16:50:15.490 NotebookApp] Error loading server extension jupyter_nbextensions_configurator
    Traceback (most recent call last):
      File "/Users/tparment/git/r2lab-python/venv/lib/python3.7/site-packages/notebook/notebookapp.py", line 1572, in init_server_extensions
        mod = importlib.import_module(modulename)
      File "/Users/tparment/git/r2lab-python/venv/lib/python3.7/importlib/__init__.py", line 127, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
      File "<frozen importlib._bootstrap>", line 983, in _find_and_load
      File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
    ModuleNotFoundError: No module named 'jupyter_nbextensions_configurator'
[W 16:50:15.492 NotebookApp] Error loading server extension jupyterlab
    Traceback (most recent call last):
      File "/Users/tparment/git/r2lab-python/venv/lib/python3.7/site-packages/notebook/notebookapp.py", line 1572, in init_server_extensions
        mod = importlib.import_module(modulename)
      File "/Users/tparment/git/r2lab-python/venv/lib/python3.7/importlib/__init__.py", line 127, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
      File "<frozen importlib._bootstrap>", line 983, in _find_and_load
      File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
    ModuleNotFoundError: No module named 'jupyterlab'
[W 16:50:15.492 NotebookApp] Error loading server extension nbdime
    Traceback (most recent call last):
      File "/Users/tparment/git/r2lab-python/venv/lib/python3.7/site-packages/notebook/notebookapp.py", line 1572, in init_server_extensions
        mod = importlib.import_module(modulename)
      File "/Users/tparment/git/r2lab-python/venv/lib/python3.7/importlib/__init__.py", line 127, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
      File "<frozen importlib._bootstrap>", line 983, in _find_and_load
      File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
    ModuleNotFoundError: No module named 'nbdime'
[I 16:50:15.493 NotebookApp] Serving notebooks from local directory: /Users/tparment/git/r2lab-python
[I 16:50:15.493 NotebookApp] The Jupyter Notebook is running at:
[I 16:50:15.493 NotebookApp] http://localhost:59548/?token=...
[I 16:50:15.493 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[W 16:50:26.909 NotebookApp] 404 GET /nbextensions/nbextensions_configurator/tree_tab/main.js (::1) 7.07ms referer=http://localhost:59548/tree/examples
[W 16:50:30.130 NotebookApp] 404 GET /nbextensions/nbdime/extension.js (::1) 1.51ms referer=http://localhost:59548/notebooks/examples/emit-json.ipynb
[W 16:50:30.148 NotebookApp] 404 GET /nbextensions/nbextensions_configurator/config_menu/main.js (::1) 1.75ms referer=http://localhost:59548/notebooks/examples/emit-json.ipynb
[W 16:50:30.158 NotebookApp] 404 GET /nbextensions/splitcell.js (::1) 1.91ms referer=http://localhost:59548/notebooks/examples/emit-json.ipynb
[I 16:50:30.451 NotebookApp] Kernel started: f3941936-7f84-4b9c-b849-31d742453e59
[W 16:50:30.505 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js (::1) 2.37ms referer=http://localhost:59548/notebooks/examples/emit-json.ipynb
[I 16:50:31.013 NotebookApp] Adapting to protocol v5.1 for kernel f3941936-7f84-4b9c-b849-31d742453e59
[I 16:52:30.431 NotebookApp] Saving file at /examples/emit-json.ipynb
[I 16:54:30.431 NotebookApp] Saving file at /examples/emit-json.ipynb
[I 16:56:30.427 NotebookApp] Saving file at /examples/emit-json.ipynb
[I 16:58:30.431 NotebookApp] Saving file at /examples/emit-json.ipynb
[I 16:59:02.927 NotebookApp] Saving file at /examples/emit-json.ipynb
[I 16:59:14.736 NotebookApp] Saving file at /examples/emit-json.ipynb
[I 17:00:30.426 NotebookApp] Saving file at /examples/emit-json.ipynb
[I 17:01:51.847 NotebookApp] Saving file at /examples/emit-json.ipynb
[I 17:24:10.802 NotebookApp] Saving file at /examples/emit-json.ipynb
[I 17:24:52.337 NotebookApp] Starting buffering for f3941936-7f84-4b9c-b849-31d742453e59:be014b75d4444b288849854db542c93d
