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NgbAccordion expects NgbPanel as its direct ContentChild:

You need to add a Unicode font supporting the code points of the language to the PDF. The code point U+2019 is RIGHT SINGLE QUOTATION MARK(’) and is not supported by the Latin-1 encoding. For example:

You can use select_dtypes to exclude all object (string) dtype:

You can create the DF and give index and column names in one line:

Q :
_{" What does this mean, and how can I fix it? "}

A :
The MEANING : Spyder is to be blamed (except where WSL fail to emulate ipc: over W10 pipe)
and REMEDY : check for more recent updates, if available & notify Spyder developers to do a better self-healing code-design, that uses ZeroMQ best-practices to unlock and release all resources they setup internally in due tiame and fashion ( no offense, just be also informed that some recent ZeroMQ native API default might cause another level of code-refactoring, as assumed-only behaviours have started to fail (self)-execute after a new, other default value starts to turn such use of implicit-only-logic upside down - zmq.LINGER being one such potential cause for indefinite hanging zmq.PUSH-socket, instead of being .close()-ed, right due to such zmq.LINGER-related behaviour.

Spyder & similar IDE tools started to heavily use ZeroMQ internally many years ago, which -for obvious reasons- started to cause problems (not only when users instantiated own ZeroMQ Context()-s) colliding in using localhost resources. As internal Spyder crashes keep appearin (some salvageable with console/IDE soft-reset(s), some not) some Spyder's usage of ZeroMQ resources was not in all cases programmed in a robust-enough, self-healing manner -- some of internal crashes did indeed leave some of the ZeroMQ resources hung (as you've seen above). Reboot sometimes being the only way one had to resort to, so as to finally release'em

I've read through Microsoft "about_Trap", and its looking like the answer is no. https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_trap?view=powershell-5.1

Read the blue "Important" boxes on the page. "trap statements may be defined anywhere within a given scope, but always apply to all statements in that scope" and "A Trap statement is scoped to where it compiles. If you have a trap statement inside a function or dot sourced script, when the function or dot sourced script exits, all trap statements inside are removed."

The "Trapping errors and scope" section of this page shows an example where a trap is set before function2 is called and the trap catches the error that happened inside function2. But technically, the call to function2 is in the same scope as the trap, so I believe even that was a same scope situation.

I did an experiment where I set a trap in a function in a module:

You are using a combination of , and + to concatenate strings and some (seemingly) random '. This should work:

When you call DefaultStyleKeyProperty.OverrideMetadata in the static constructor of your class, your're supposed to define a default style for the control in a ResourceDictionary called generic.xaml that is located in a folder called themes at the root of the project where the control class is defined by default.

So move your style themes/generic.xaml if you haven't already done so and also remove the x:Key from the Style: