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### Running command:
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###   /Library/Frameworks/R.framework/Resources/bin/R CMD build --keep-empty-dirs --no-resave-data ttgsea
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* checking for file ‘ttgsea/DESCRIPTION’ ... OK
* preparing ‘ttgsea’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘ttgsea.Rmd’ using rmarkdown
Loading required package: keras
pre-processing...
Quitting from lines 90-115 (ttgsea.Rmd) 
Error: processing vignette 'ttgsea.Rmd' failed with diagnostics:
Valid installation of TensorFlow not found.

Python environments searched for 'tensorflow' package:
 /opt/homebrew/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/bin/python3.9
 /usr/bin/python3

Python exception encountered:
 Traceback (most recent call last):
  File "/Library/Frameworks/R.framework/Versions/4.2-arm64/Resources/library/reticulate/python/rpytools/loader.py", line 39, in _import_hook
    module = _import(
ModuleNotFoundError: No module named 'tensorflow'


You can install TensorFlow using the install_tensorflow() function.

--- failed re-building ‘ttgsea.Rmd’

SUMMARY: processing the following file failed:
  ‘ttgsea.Rmd’

Error: Vignette re-building failed.
Execution halted