the layer MLP has never been called and thus has no defined output

[sparta-2024]

Describe the bug
When using tensorflow 2.16 or 2.17 to do train ,there is an error occurred:the layer MLP has never been called and thus has no defined output.
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[sparta-2024]

models.py file should be added the following code:
import os
os.environ["TF_USE_LEGACY_KERAS"] = "1"

[isha382]

hi @sparta-2024, the issue is of the version of tensorflow you can try with 2.9.0 version which is preferred version and can refer following documentation policy for more information.

[thias15]

Opened PR #514 with the legacy-Keras flag (set in policy/openbot/__init__.py so it applies before any submodule imports TensorFlow). Once that lands, training should work on TF >= 2.16 without the MLP error and without forcing a downgrade. Thanks @sparta-2024 for finding the workaround.