Workbench make build trading-ui error

Has anyone else seen this error? How can it be solved?

ERROR: Service ‘trading_ui’ failed to build: The command ‘/bin/sh -c mkdir -p /opt/vendor/bundle && chown -R app:app /opt/vendor && su app -s /bin/bash -c “bundle install --path /opt/vendor/bundle”’ returned a non-zero code: 7

Makefile:22: recipe for target ‘build’ failed

make: *** [build] Error 1

Ty