[Bug] AttributeError & TypeError in bertwarper.py with Transformers v5.x

[t8ja]

Description:
The current implementation of bertwarper.py within the groundingdino dependency is incompatible with Transformers 5.3.0 and Torch 2.10. Several legacy BERT methods used by GroundingDINO have been removed or their signatures altered in these newer releases.

Environment Info (Verified):

Component	Version
OS	Linux 6.19.9-1-cachyos
Python	3.10.20
Torch	2.10.0+cu126
Transformers	5.3.0
GroundingDINO-py	0.4.0

---

The Fixes:
The following patches to groundingdino/models/GroundingDINO/bertwarper.py resolve the initialization and inference crashes:

1. Fix AttributeError (Line ~29)

BertModel in v5.x no longer exposes get_head_mask directly.

# Use getattr to safely handle missing legacy methods
self.get_head_mask = getattr(bert_model, "get_head_mask", None)

2. Fix TypeError (Line ~109)

The device argument has been removed from get_extended_attention_mask as it is now inferred from the input tensors.

# Updated for Transformers 5.x API
extended_attention_mask: torch.Tensor = self.get_extended_attention_mask(
    attention_mask, input_shape
)

3. Fix NoneType Exception (Line ~131)

Prevents a crash when the code attempts to call the now-missing get_head_mask function.

if self.get_head_mask is not None:
    head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers)
else:
    head_mask = [None] * self.config.num_hidden_layers

Additional Note:
These changes are backwards compatible and allow the node to function across both legacy (4.x) and modern (5.x) Transformer environments.

[dynatron832]

i had to give it a try. i found the bertwarper.py and mod it. after that comfy loads and the startup say´s rmbg is loaded but the sam2 segmentation node is vanished. if i load a workflow with the sam2 node comfy complains about missing nodes.