Elastic beanstalk database migrations no longer running

I am hosting a django site via elastic beanstalk and I have a 01_migrate.sh file in .platform/hooks/postdeploy in order to migrate model changes to a postgres database on Amazon RDS:

 #!/bin/sh
source /var/app/venv/staging-LQM1lest/bin/activate
python /var/app/current/manage.py migrate --noinput
python /var/app/current/manage.py createsu
python /var/app/current/manage.py collectstatic --noinput

This used to work well but now when I check the hooks log, although it appears to find the file there is no output to suggest that the migrate command has been ran

i.e. previously I would get the following even if no new migrations:

2022/03/29 05:12:56.530728 [INFO] Running command .platform/hooks/postdeploy/01_migrate.sh
2022/03/29 05:13:11.872676 [INFO] Operations to perform:
  Apply all migrations: account, admin, auth, blog, contenttypes, home, se_balance, sessions, sites, socialaccount, taggit, users, wagtailadmin, wagtailcore, wagtaildocs, wagtailembeds, wagtailforms, wagtailimages, wagtailredirects, wagtailsearch, wagtailusers
Running migrations:
  No migrations to apply.
Found another file with the destination path 'favicon.ico'. It will be ignored since only the first encountered file is collected. If this is not what you want, make sure every static file has a unique path.

Whereas now I just get:

Found another file with the destination path 'favicon.ico'. It will be ignored since only the first encountered file is collected. If this is not what you want, make sure every static file has a unique path.```

I dont know what has occurred to make this change. Of potential relevance is that eb deploy stopped being ablke to find the 01_migrate.sh file so I had to move the folder and its contents .platform/hooks/postdeploy/01_migrate.sh up a to the parent directory and then it became able to find it again.