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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 VAExprs
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* checking for file ‘VAExprs/DESCRIPTION’ ... OK
* preparing ‘VAExprs’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘VAExprs.Rmd’ using rmarkdown
2025-07-20 18:55:41.851514: I tensorflow/core/platform/cpu_feature_guard.cc:210] This TensorFlow binary is optimized to use available CPU instructions in performance-critical operations.
To enable the following instructions: AVX2 AVX512F AVX512_VNNI FMA, in other operations, rebuild TensorFlow with the appropriate compiler flags.
/Users/biocbuild/.virtualenvs/r-keras/lib/python3.9/site-packages/urllib3/__init__.py:35: NotOpenSSLWarning: urllib3 v2 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled with 'LibreSSL 2.8.3'. See: https://github.com/urllib3/urllib3/issues/3020
  warnings.warn(
2025-07-20 18:55:58.308 R[37821:254867189] XType: com.apple.fonts is not accessible.
2025-07-20 18:55:58.308 R[37821:254867189] XType: XTFontStaticRegistry is enabled.

Quitting from VAExprs.Rmd:87-111 [unnamed-chunk-2]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `UseMethod()`:
! no applicable method for 'compile' applied to an object of class "c('keras.src.models.functional.Functional', 'keras.models.functional.Functional', 'keras.src.ops.function.Function', 'keras.ops.function.Function', 'keras.src.models.model.Model', 'keras.models.model.Model', 'keras.src.backend.tensorflow.trainer.TensorFlowTrainer', 'keras.backend.tensorflow.trainer.TensorFlowTrainer', 'keras.src.trainers.trainer.Trainer', 'keras.trainers.trainer.Trainer', 'keras.src.layers.layer.Layer', 'keras.layers.layer.Layer', 'keras.src.backend.tensorflow.layer.TFLayer', 'keras.backend.tensorflow.layer.TFLayer', 'keras.src.backend.tensorflow.trackable.KerasAutoTrackable', 'keras.backend.tensorflow.trackable.KerasAutoTrackable', 'tensorflow.python.trackable.autotrackable.AutoTrackable', 'tensorflow.python.trackable.base.Trackable', 'keras.src.ops.operation.Operation', 'keras.ops.operation.Operation', 'keras.src.saving.keras_saveable.KerasSaveable', 'keras.saving.keras_saveable.KerasSaveable', 'python.builtin.object')"
---
Backtrace:
    ▆
 1. ├─VAExprs::fit_vae(...)
 2. │ └─model %>% keras::compile(optimizer = optimizer, loss = vae_loss)
 3. └─keras::compile(., optimizer = optimizer, loss = vae_loss)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'VAExprs.Rmd' failed with diagnostics:
no applicable method for 'compile' applied to an object of class "c('keras.src.models.functional.Functional', 'keras.models.functional.Functional', 'keras.src.ops.function.Function', 'keras.ops.function.Function', 'keras.src.models.model.Model', 'keras.models.model.Model', 'keras.src.backend.tensorflow.trainer.TensorFlowTrainer', 'keras.backend.tensorflow.trainer.TensorFlowTrainer', 'keras.src.trainers.trainer.Trainer', 'keras.trainers.trainer.Trainer', 'keras.src.layers.layer.Layer', 'keras.layers.layer.Layer', 'keras.src.backend.tensorflow.layer.TFLayer', 'keras.backend.tensorflow.layer.TFLayer', 'keras.src.backend.tensorflow.trackable.KerasAutoTrackable', 'keras.backend.tensorflow.trackable.KerasAutoTrackable', 'tensorflow.python.trackable.autotrackable.AutoTrackable', 'tensorflow.python.trackable.base.Trackable', 'keras.src.ops.operation.Operation', 'keras.ops.operation.Operation', 'keras.src.saving.keras_saveable.KerasSaveable', 'keras.saving.keras_saveable.KerasSaveable', 'python.builtin.object')"
--- failed re-building ‘VAExprs.Rmd’

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

Error: Vignette re-building failed.
Execution halted