TypeError: unsupported operand type(s) for +: 'Config' and 'str'

[sakuras-ya]

Hello, I used your code when I was training my network, and I met this error:
Traceback (most recent call last): File "run.py", line 156, in <module> energyusage.evaluate(train, config, model, train_iter, dev_iter, test_iter, args, pdf=True) File "/home/user17302330/.conda/envs/cnn-text/lib/python3.6/site-packages/energyusage/evaluate.py", line 331, in evaluate func_info, comparison_values, default_emissions, default_location) File "/home/user17302330/.conda/envs/cnn-text/lib/python3.6/site-packages/energyusage/report.py", line 318, in generate info_text += arg + "," TypeError: unsupported operand type(s) for +: 'Config' and 'str'

'Config' is a class I created, and I don't know how to solve the problem.