Error resetting the class

Gluon
1

Here is the code I am trying to run to access the model with custom classes:

import mxnet as mx
from matplotlib import pyplot as plt
from gluoncv import model_zoo, data, utils

net = model_zoo.get_model('faster_rcnn_resnet50_v1b_voc', pretrained=True, ctx=mx.gpu())
net.load_parameters('faster_rcnn_resnet50_v1b_voc_1699_0.9477.params')
net.reset_class(['abc', 'xyz', '123', '456', '896', '789'], reuse_weights={"abc": "abc", "xyz": "xyz", "123": "123", "456": "456", "896": "896", "789": "789"})

Error:
~/miniconda3/envs/py37_venv/lib/python3.7/site-packages/gluoncv/model_zoo/rcnn/rcnn.py in reset_class(self, classes, reuse_weights)
242
243 for k, v in reuse_weights.items():
--> 244 if k >= len(self.classes) or v >= len(old_classes):
245 warnings.warn("reuse mapping {}/{} -> {}/{} out of range".format(
246 k, self.classes, v, old_classes))

TypeError: '>=' not supported between instances of 'str' and 'int'