[Bug] TypeError: Cannot read properties of null (reading 'remove')

[olegdovger]

Version

5.4.2

Link to Minimal Reproduction

Not possible

Steps to Reproduce

1. Create custom series type.
2. Create legend with data item to be able to hide/show custom series.
3. Toggle on legend item.
4. See exception "TypeError: Cannot read properties of null (reading 'remove')"

This issue is hard to reproduce. Maybe it have no sense to reproduce it.

Current Behavior

Can not call method "remove" on null value of parent property.

Expected Behavior

There are no unhandled exceptions.

Environment

- OS: Mac OS
- Browser: Chrome
- Framework: -

Any additional comments?

No response

[echarts-bot[bot]]

I'm sorry to close this issue for it lacks the necessary title. Please provide a descriptive and as concise as possible title to describe your problems or requests and then the maintainers or I will reopen this issue.

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[olegdovger]

I noticed that this behaviour can be reproduced in next case.

Legend item for custom series turned off by default.

1. Render custom series (type line). For example 5 lines
2. Turn on legend to show lines.
3. Then rerender chart with other data but with less number of lines than on step 1 (3 lines as an example).
4. Repeat step 2.
5. Exception.

[olegdovger]

By the way, error happened in file "customGraphicTransition.js"

[olegdovger]

PR - https://github.com/apache/echarts/pull/18890

[ryuu-smallit]

@olegdovger Hey! I have the same problem. As your PR hasn't be merged, Do you have any workaround?