The build was working fine until yesterday, but today we are experiencing build errors.
When I checked the contents, it seems that the following step failed to load.
Could you please confirm this?

Hello,
This Step was removed as was duplicate, and marked as deprecated.
- install-bundler@1: {}
Replacing it with the above would work as quick fix.
However it seems that this version is no longer maintained by the community contributor. (GitHub - FutureWorkshops/bitrise-step-install-bundler)
Thank you for your quick response, it was very helpful.