Fix error deserialization bug #2782

Job	Run time
macOS--dotnet6-only	5m 10s
windows--dotnet6-and-legacyFramework	7m 29s
linux22-github--dotnet-and-mono	4m 5s
linux22-vanilla--stockdotnet6-and-stockmono	7m 19s
linux22-vanilla--stockdotnet6-and-newmono	6m 27s
linux22-github--dotnet-and-newmono	4m 8s
linux22-vanilla--stockdotnet6-only	5m 21s
linux22-vanilla--stockmono-only	7m 53s
macOS--dotnet6-and-mono	8m 59s
macOS--mono-only	7m 4s
windows--dotnet6-only	8m 18s
windows--legacyFramework-only	26m 16s
linux20-github--dotnet-and-mono	4m 32s
linux20-github--dotnet-and-newmono	5m 15s
linux20-vanilla--newmono-only	8m 47s
linux20-vanilla--stockmono-only	6m 10s
linux22-vanilla--newmono-only	8m 26s
conventions	1m 35s
snap_pkg	0s
	2h 13m 14s

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