a error：tests/test_frontend.py::test_para_weight_gen FAILED

[onion5376]

the xESMF is installed by mamba. Following the tech doc, I test its installation with pytest, it show a error as followings:

========================== short test summary info ============================
FAILED tests/test_frontend.py::test_para_weight_gen - ValueError: zip() argument 2 is shorter than argument 1
============ 1 failed, 129 passed, 1 skipped, 39 warnings in 25.95s ============