Unexpected crash on 3.2.2

[acegreen]

What did you do?

What did you expect to happen?

No crash after upgrade. This exact code works on 3.2.1. Going back to 3.2.1, everything works fine.

What happened instead?

Crash objc[625]: Attempt to use unknown class 0x12ddfbf00 after upgrade from 3.2.1 to 3.2.2

Charts Environment

Charts version/Branch/Commit Number: 3.2.2
Xcode version: Xcode 10.2
Swift version: Swift 4.2
Platform(s) running Charts: iOS
macOS version running Xcode:

Demo Project

[liuxuan30]

cannot see the crash log. post it in text.

Need you to debug a little. this error cannot give me any hint what's the issue.

[acegreen]

@liuxuan30 there is nothing to post, just that one line error and the stack trace on that screenshot.

[liuxuan30]

@acegreen at the breakpoint, type bt to print the stack

[cruisediary]

Execution was interrupted, reason: EXC_BAD_ACCESS (code=1, address=0x20).
The process has been returned to the state before expression evaluation.

But after clean build it disappeared

[acegreen]

Deleting derived folder and cleaning project indeed works.