Updated transformers 4.11.3 to --> 4.21.1

[atharvjairath]

Fix for issue:
#53
#40
Updated transformers 4.11.3 to --> 4.21.1 in Setup.py

[SamSamhuns]

Updating the transformer library version will not solve the issue. If you install with pip install . using these changes, you will still face the ValueError: The following model_kwargs are not used by the model: ['encoder_outputs'] (note: typos in the generate arguments will also show up in this list) error.

Based on #53, I suggested locking the transformer version to transformers==4.21.1 as a temporary fix and not transformers>=4.21.1 in setup.py.

    ),
    python_requires=">=3.7",
    install_requires=[
-      "transformers>=4.11.3",
+      "transformers==4.21.1",
        "timm",
        "datasets[vision]",
        "pytorch-lightning>=1.6.4",

A new PR with modifications to the donut/model.py has been made at #56 to support newer transformer versions

[atharvjairath]

A new PR with modifications to the donut/model.py has been made at #56 to support newer transformer versions

Great!

Updating the transformer library version will not solve the issue. If you install with pip install . using these changes, you will still face the ValueError: The following model_kwargs are not used by the model: ['encoder_outputs'] (note: typos in the generate arguments will also show up in this list) error.

For some reason, it works in my case, just updating the setup.py with transformers==4.21.1 and resetting the env.

[SamSamhuns]

For some reason, it works in my case, just updating the setup.py with transformers==4.21.1 and resetting the env.

That's because you pinned the transformers version to 4.21.1 with == but in your commit, you have it as >=4.21.1