IsTrimmable and EnableTrimAnalyzer are not supported for the target framework. Consider multi-targeting to a supported framework to enable trimming, and set IsTrimmable only for the supported frameworks. For example:

<IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">true</IsTrimmable>

Possible null reference argument for parameter 'definition' in 'WasmFunctionDefinition? WasmUtils.TryGetWasmDefinition(Il2CppMethodDefinition definition)'.

Possible null reference argument for parameter 'body' in 'List<WasmInstruction> Disassembler.Disassemble(byte[] body, uint virtualAddress)'.