Bug 1663512 Comment 26 Edit History

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There is [one last instance](https://crash-stats.mozilla.org/report/index/b7d63baa-d3bd-4f85-b126-07fda0220727) in beta 103, saying:

```
E10SUtils.getRemoteTypeForWorkerPrincipal did throw: workerType=service, principal=https, preferredRemoteType=web, processRemoteType=parent, errorName=NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS, errorLocation=resource://gre/modules/XPCOMUtils.sys.mjs:375 -
```

I am having a hard time to find the right revision for `XPCOMUtils.sys.mjs`, I can see only `XPCOMUtils.jsm` in that tree (I am running a build to see if it is generated).
There is [one last instance](https://crash-stats.mozilla.org/report/index/b7d63baa-d3bd-4f85-b126-07fda0220727) in beta 103, saying:

```
E10SUtils.getRemoteTypeForWorkerPrincipal did throw: workerType=service, principal=https, preferredRemoteType=web, processRemoteType=parent, errorName=NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS, errorLocation=resource://gre/modules/XPCOMUtils.sys.mjs:375 -
```

I am having a hard time to find the right revision for `XPCOMUtils.sys.mjs`, I can see only `XPCOMUtils.jsm` in that tree (~~I am running a build to see if it is generated~~). Edit: It seems bug 1777486 migrated this, so this is puzzling actually.

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