any help decrypting this zte zxhn h108n config file

python decode_zte_config.py --key "GrWM2Hz&LTvz&f^5" db_default_dsl_cfg.xml config.bin.xml

or

python decode_zte_config.py --key "GrWM2Hz&LTvz&f^5" db_default_eth_cfg.xml config.bin.xml

the script https://pastebin.com/GGxbngtK

i got this error with the db_default_dsl_cfg.xml file

struct.error: unpack requires a buffer of 24 bytes

and this with the db_default_eth_cfg.xml file

struct.error: unpack requires a buffer of 44 bytes