@Gino Thank you for the reply. I found below statement from the docs page About Libraries
It is highly recommended for libraries and processes to use the same versions of dependencies, or within a difference of minor package updates, to avoid running into breaking changes. This is a best practice of developing and reusing libraries.
If you encounter System.MissingMethodException when executing a process that invokes a library, you should recompile your library using dependencies with a version closer to the ones used in the aforementioned process.
In short whenever we are upgrading the UiPath (in this case 2019.4.4 to 2019.10.4) we should also update library dependencies to the newer version.
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