ValueError: Node 'fitting_attr/dfparam' is not unique, when trying to load a model into deepmd.calculator

[ShubhangG]

I have an old graph potential that I converted using dp convert-from. Now when I try and load the converted potential into a deepmd.calculator to try and get the energies, I am faced with an error

ValueError: Node 'fitting_attr/dfparam' is not unique.

Any help to resolve the issue will be appreciated

I am using deepmd-kit-2.1.5
The code I used:

from deepmd.calculator import DP

deep_potential = DP(model="converted_deepmd.potential")

The full longform error I get is

 File "/scratch/sgoswam3/EOS_project/lib64/python3.6/site-packages/deepmd/calculator.py", line 67, in __init__
    self.dp = DeepPotential(str(Path(model).resolve()))
  File "/scratch/sgoswam3/EOS_project/lib64/python3.6/site-packages/deepmd/infer/__init__.py", line 58, in DeepPotential
    mf, load_prefix=load_prefix, default_tf_graph=default_tf_graph
  File "/scratch/sgoswam3/EOS_project/lib64/python3.6/site-packages/deepmd/infer/deep_eval.py", line 41, in __init__
    model_file, prefix=load_prefix, default_tf_graph=default_tf_graph
  File "/scratch/sgoswam3/EOS_project/lib64/python3.6/site-packages/deepmd/infer/deep_eval.py", line 176, in _load_graph
    producer_op_list=None
  File "/scratch/sgoswam3/EOS_project/lib64/python3.6/site-packages/tensorflow/python/util/deprecation.py", line 549, in new_func
    return func(*args, **kwargs)
  File "/scratch/sgoswam3/EOS_project/lib64/python3.6/site-packages/tensorflow/python/framework/importer.py", line 405, in import_graph_def
    producer_op_list=producer_op_list)
  File "/scratch/sgoswam3/EOS_project/lib64/python3.6/site-packages/tensorflow/python/framework/importer.py", line 501, in _import_graph_def_internal
    raise ValueError(str(e))
ValueError: Node 'fitting_attr/dfparam' is not unique

[ShubhangG]

I figured out the problem. I had put the incorrect version of the old potential while converting dp convert-from. I was converting from 1.0 to the latest instead of 1.1 to the latest. Re-converting it worked out in the end. No longer this error.