release-please-backend error: Cannot convert undefined or null to object

[ldetmer]

This error occurred 3x on 10/4:

message: "Cannot convert undefined or null to object"
stack: "TypeError: Cannot convert undefined or null to object
at Function.entries ()
at PackageLockJson.updateContent (/usr/src/app/node_modules/release-please/build/src/updaters/node/package-lock-json.js:69:42)
at GitHub.buildChangeSet (/usr/src/app/node_modules/release-please/build/src/github.js:1066:51)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async /usr/src/app/node_modules/release-please/build/src/github.js:147:29
at async GitHub.createPullRequest (/usr/src/app/node_modules/release-please/build/src/github.js:1247:20)
at async Manifest.createOrUpdatePullRequest (/usr/src/app/node_modules/release-please/build/src/manifest.js:552:32)
at async Promise.all (index 0)
at async Manifest.createPullRequests (/usr/src/app/node_modules/release-please/build/src/manifest.js:492:33)
at async Runner.createPullRequests (/usr/src/app/build/src/runner.js:23:5)"
type: "TypeError"