I changed today the stack of my workflows from Android & Docker, on Ubuntu 16.04 to Ubuntu 20.04. Unfortunately now the build cannot complete the install missing tools step. I guess the problem is caused due to the gradle upgrade to 6.3. Since the old stack is deprecated i cannot revert back to it, so currently all my builds fail
There have been various changes to the stacks recently. If you are still having this issue, please let us know. The best option would be to open a support ticket - including the build URL and enabling support access (under the “Settings” tab)
We would need a bit more information about how the step is failing - if it still is!