Error code and wont save list

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Please study the introductory section of

FAQ Section: Lists

Introductory Making Lists (Concepts) - MIT Lists Chapter from MIT AI2 Online book Translatable copy of Lists Chapter from MIT AI2 Online book How to work with Lists - imagnity MIT AI2 List Blocks Help Page How to Display a List - MIT nb191 Advanced list blocks (filter, sort, map, reduce) Tables Dynamic-editable-html-table - @TimAI2 free-tableviewer-fully-style-customized-to-show-table-data (extension) - @Kevinkun Dynamic Table Layout and Table Listpicker (HTML) - @Taifun Dynamic Tab…