FallDownGoBoom64 error

Good, is this issue resolved or anything about how to solve it? I have the same problem when I copy/paste a page from one document to another.

As far as I know it's a playful thing developers will do to identify a specific issue - if you send the report they'll see it I suppose.

It's basically something has crashed InDesign - what it was I don't know

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How and when did the error occur?

What are you doing when the error occurs?

Is it opening a file, closing a file, saving, using a plugin, using a certain panel? 

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Things to try

Check for Updates

Disable Plugins

Reset Preferences

Windows: Start InDesign, and then press Shift+Ctrl+Alt. Click Yes when asked if you want to delete preference files.
macOS: While pressing Shift+Option+Command+Control, start InDesign. Click Yes when asked if you want to delete preference files.
A dialog will appear asking to delete the InDesign Preferences, select 'Yes' on this dialog.
Further info and instructions here if needed:
https://helpx.adobe.com/in/indesign/kb/indesign-preferences-support-file-locations.html

Check System Requirements

Ensure that your computer meets the system requirements for Adobe InDesign 2024. Inadequate hardware can sometimes lead to performance issues and crashes.

Clean install

Reinstalling rarely fixes everything - you can do a complete reinstall using the
Creative Cloud Cleaner Tool https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html

Contact Adobe Support

If none of the above steps resolve the issue