Cannot build anything with Balena Base Images | exec user process caused "exec format error"

Hello, it looks like you may be running up against this issue: https://github.com/balena-io/balena-cli/issues/1788
Can you try either pinning the base image to a previous version such as adding -20200327 to the end of the FROM line or upgrade your CLI to v11.31.26 or higher (but likely no higher than v12.2.2 - see https://github.com/balena-io/balena-cli/issues/1998)

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