Possible reason why the “Couldn't find temp query result for X” error occurs

[P1ayer4312]

We recently updated Gatsby to v5 and noticed that the build fails randomly with the temp query error, but if the build is restarted it finishes normally.

  Error: Couldn't find temp query result for "/url/replaced/for/here".

  - page-data.ts:97 readPageQueryResult
    [client]/[gatsby]/src/utils/page-data.ts:97:9

  - task_queues:60 runNextTicks
    node:internal/process/task_queues:60:5

  - timers:447 processImmediate
    node:internal/timers:447:9

  - page-data.ts:106 writePageData
    [client]/[gatsby]/src/utils/page-data.ts:106:18

  - page-data.ts:304 
    [client]/[gatsby]/src/utils/page-data.ts:304:28

We did a bit of digging into the node_modules and looked at the readPageQueryResult function inside page-data.js. From our testing we noticed that the error is thrown every time stringifiedResult is undefined, we also checked how that variable is getting its value and everything about it looks normal.
Currently we suspect that the issue is related to the lmdb dependency. Looking into their Github issues other users have a similar issue, getting an undefined value.

From what I can tell Gatsby currently uses "lmdb": “2.5.3” and there’s a newer version released, so maybe updating the package might resolve the issue.