Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@v4, actions/setup-dotnet@v4, github/codeql-action/analyze@v3, github/codeql-action/init@v3. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

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

Nullability of reference types in value of type 'List<MiniExcelColumnMapping?>' doesn't match target type 'List<MiniExcelColumnMapping>'.

Possible null reference argument for parameter 'value' in 'List<MiniExcelColumnMapping?> ColumnMappingsProvider.GetColumnMappingFromValue(object value, MiniExcelBaseConfiguration configuration)'.

Nullability of reference types in value of type 'List<MiniExcelColumnMapping?>' doesn't match target type 'List<MiniExcelColumnMapping>'.

Possible null reference argument for parameter 'name' in 'int IDataRecord.GetOrdinal(string name)'.

Possible null reference argument for parameter 'source' in 'bool Enumerable.Any<DynamicExcelColumn>(IEnumerable<DynamicExcelColumn> source, Func<DynamicExcelColumn, bool> predicate)'.

Possible null reference argument for parameter 'prop' in 'CellWriteInfo.CellWriteInfo(object? value, int cellIndex, MiniExcelColumnMapping prop)'.

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

Nullability of reference types in value of type 'List<MiniExcelColumnMapping?>' doesn't match target type 'List<MiniExcelColumnMapping>'.

Nullability of reference types in value of type 'List<MiniExcelColumnMapping?>' doesn't match target type 'List<MiniExcelColumnMapping>'.

Cannot build an overlay database because build-mode is set to "undefined" instead of "none". Falling back to creating a normal full database instead.