C++ Classes and blueprint could not be loaded

Development Programming & Scripting Blueprint
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1

hello… it is a nice day.
It’s really painful. Please help me…

  1. When the project is turned off and on, there are no C++ sources.

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  2. Click the Live Coding button.
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  3. The missing C++ classes are back.

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  4. But!!! Blueprint could not be loaded because it derives from an invalid class…

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It’s really sad, but so far I’ve been working on re-creating Blueprints.
However, this was also possible when the amount was small.

How do I keep the C++ classes from disappearing,
and how do I keep the blueprint from losing their parents?

2

The problem was resolved by turning off the livecoder function.