`IndicatorExtensions` cannot be used with `PythonIndicator`

[LouisSzeto]

Expected Behavior

IndicatorExtensions can be used with PythonIndicator for all method (Of, Over,...)

Actual Behavior

For Of: It will throw error of Cannot perform runtime binding on a null reference in PythonIndicator.cs:line 143 It looks like it didn't read the PythonIndicator's value correctly.

For others: The combination method didn't get called at all, just like https://github.com/QuantConnect/Lean/issues/3565#issuecomment-1113254800

Potential Solution

NA

Reproducing the Problem

https://www.quantconnect.com/terminal/processCache?request=embedded_backtest_8bbd321995671f7f48427d27a4bd29d6.html

System Information

QC cloud

Checklist

• [X] I have completely filled out this template
• [X] I have confirmed that this issue exists on the current master branch
• [X] I have confirmed that this is not a duplicate issue by searching issues

• [X] I have provided detailed steps to reproduce the issue

[iotaweb]

Thank you for raising, I'm facing the same issue. It appears to ignoring the indicator value and passing though the 'SPY' close value to the custom indicator.