Improve error handling in ReadPanel()

[JosefTaylor]

NOTE: Depends on

Issues addressed by this PR

Closes #195

Test files

https://burohappold.sharepoint.com/:u:/r/sites/BHoM/02_Current/12_Scripts/02_Pull%20Request/BHoM/RAM_Toolkit/%23196-fix-panel-pull/BuroHappold_BHoM_v5.0.beta_Create%20-%20read%20-%20update%20elements%20-%20building.gh?csf=1&web=1&e=CsS8Wd

Changelog

Additional comments

[JosefTaylor]

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[JosefTaylor]

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[JosefTaylor]

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[JosefTaylor]

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