SMAPI 2.7 Save Backup fails on Ubuntu 18.04

[InsaneJ]

Log file shows the following:

[10:02:37 WARN  Save Backup] Couldn't back up save files (see log file for details).
[10:02:37 TRACE Save Backup] System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeLoadException: Could not load type 'System.Buffers.ArrayPool`1' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
  at System.IO.Compression.ZipFile.CreateFromDirectory (System.String sourceDirectoryName, System.String destinationArchiveFileName, CompressionLevel compressionLevel, Boolean includeBaseDirectory) <0x41080bc0 + 0x00053> in <filename unknown>:0 
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x40d0e0f0 + 0x000a3> in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x40d0e0f0 + 0x000fb> in <filename unknown>:0 
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) <0x40ed9600 + 0x0002a> in <filename unknown>:0 
  at StardewModdingAPI.Mods.SaveBackup.ModEntry.CreateBackup (System.IO.DirectoryInfo backupFolder) <0x41080240 + 0x0046f> in <filename unknown>:0 

Complete log file:
https://paste2.org/YcsJWUPE

Sorry for the short bug report. I don't have time right now to troubleshoot further and figure out which mod is causing this issue with Save Backup.

[Pathoschild]

Fixed in develop via ffc009a for the upcoming SMAPI 2.11. If zip fails, it will now default to storing an uncompressed copy of the saves instead.