Error in drug search for proximity

[lspindler2509]

I tried to run the proximity drug search algorithm with the following parameters:

parameters = {
"identifier": identifier,
"algorithm": "proximity",
"target": "drug",
"includeIndirectDrugs": False,
"includeNonApprovedDrugs": False,
"result_size": 50,
}
task = new_task(id_set, parameters)
r = task.get_result()

Once the Drugst.One backend was done, the error of the screenshot occurs, which is apparently in the following file:
https://github.com/drugst-one/python-package/blob/main/src/drugstone/scripts/normalize_nodes.py

With the same call/setup when using trustrank, degree or closeness, everything works. So it seems to be a specific problem with proximity.
Did we call the algorithm incorrectly, or is this maybe a bug?