Access denied

Running gitlab-elasticsearch-indexer v2.6.0-4-g38937e3 built from source. Gitlab is on v12.10.14, using elasticsearch v6.8.11 on the same box. Successfully created the index and now starting full index. Started indexing on page "/admin/application_settings/integrations#js-elasticsearch-settings".

Sidekiq gives me loads of errors Errno::EACCES: Permission denied - /home/git/gitlab-elasticsearch-indexer/

Or screenshoted here:

Switching the permissions to 777 on /home/git/gitlab-elasticsearch-indexer didn't help so far.