This same issue is happening here:
https://www.drupal.org/project/gatsby/issues/3261478

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#2 decoupled_preview_iframe-3462154-missing-node-key.patch468 bytesdrupalninja99

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drupalninja99 created an issue. See original summary.

drupalninja99’s picture

drupalninja99 commented
StatusFileSize
new decoupled_preview_iframe-3462154-missing-node-key.patch468 bytes

This resolves the issue for me.

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jmolivas commented

Nice catch @drupalninja99 will test and have it merged

jmolivas opened merge request !11

jmolivas closed merge request !11

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jmolivas commented
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jmolivas commented
Status: Active » Fixed

  • jmolivas committed 40d0bbee on 1.0.x 
    🐛 Issue #3462154 & #3463916: fix build render array missing keys
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jmolivas commented
Status: Fixed » Closed (fixed)

included on 1.0.6