For information i found the problem:
in esp_err_t uhci_config(uhci_config_t *config)

replace the line
periph_module_enable(PERIPH_UHCI0_MODULE);
by
periph_module_enable(uhci_num==0?PERIPH_UHCI0_MODULE:PERIPH_UHCI1_MODULE);

Hello,

many years later, i am facing the same issue. Did you fix it ?