Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-dotnet@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Dereference of a possibly null reference.

Possible null reference argument for parameter 'key' in '(int HeaderDxf, int TotalDxf, int WholeDxf, int FirstColDxf, int FirstRowStripeDxf, int SecondRowStripeDxf) Dictionary<string, (int HeaderDxf, int TotalDxf, int WholeDxf, int FirstColDxf, int FirstRowStripeDxf, int SecondRowStripeDxf)>.this[string key]'.

Possible null reference argument for parameter 's' in 'bool NetFxPolyfills.Contains(string s, string value, StringComparison comparison)'.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'key' in 'bool Dictionary<string, CellBorderInfo>.TryGetValue(string key, out CellBorderInfo value)'.

Possible null reference argument for parameter 'key' in 'CellBorderInfo Dictionary<string, CellBorderInfo>.this[string key]'.

Possible null reference argument for parameter 'Style' in 'BorderSide.BorderSide(string Style, PdfColor? Color)'.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'footerFormat' in 'void ExcelToPdfConverter.RenderPageFooter(IReadOnlyList<PdfPage> pages, string footerFormat, int startPage, int endPage, int totalPages, float footerY, float marginL, float marginR)'.