because your developer mode is disabled so that is the problem, so please enable the developer mode
bench set-config developer_mode 1
// OR
bench --site [your_sitename] set-config developer_mode 1
because your developer mode is disabled so that is the problem, so please enable the developer mode
bench set-config developer_mode 1
// OR
bench --site [your_sitename] set-config developer_mode 1