"git status" shows changes, while nothing is amended

There are many apps (mainly where default branch is develop) which fail to update, as it assume some local changes, when there is none, like:

frappe@cc:~/frappe-bench/apps/helpdesk$ git status
On branch develop
Your branch is up to date with ‘upstream/develop’.

Changes not staged for commit:
(use “git add …” to update what will be committed)
(use “git restore …” to discard changes in working directory)
modified: yarn.lock

no changes added to commit (use “git add” and/or “git commit -a”)
frappe@cc:~/frappe-bench/apps/helpdesk$

hrms has been corrected, but many others are left:

Please refer details at: