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Error 'This file is not encrypted'

See original GitHub issue

Upgraded from 1.3.0 to 1.5.1 and now this error is being thrown - ‘This file is not encrypted’

Stacktrace -

  at LiteDB.Engine.AesStream..ctor (System.String password, System.IO.Stream stream) [0x001f9] in <7b8c154640e6442cbc93e4644732d128>:0 
  at (wrapper remoting-invoke-with-check) LiteDB.Engine.AesStream..ctor(string,System.IO.Stream)
  at LiteDB.Engine.FileStreamFactory.GetStream (System.Boolean canWrite, System.Boolean sequencial) [0x00077] in <7b8c154640e6442cbc93e4644732d128>:0 
  at LiteDB.Engine.StreamPool+<>c__DisplayClass3_0.<.ctor>b__0 () [0x00000] in <7b8c154640e6442cbc93e4644732d128>:0 
  at System.Lazy`1[T].ViaFactory (System.Threading.LazyThreadSafetyMode mode) [0x00043] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Lazy.cs:333 
  at System.Lazy`1[T].ExecutionAndPublication (System.LazyHelper executionAndPublication, System.Boolean useDefaultConstructor) [0x00022] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Lazy.cs:351 
  at System.Lazy`1[T].CreateValue () [0x00074] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Lazy.cs:431 
  at System.Lazy`1[T].get_Value () [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Lazy.cs:509 
  at LiteDB.Engine.StreamPool.get_Writer () [0x00000] in <7b8c154640e6442cbc93e4644732d128>:0 
  at LiteDB.Engine.DiskService..ctor (LiteDB.Engine.EngineSettings settings, System.Int32[] memorySegmentSizes) [0x0009a] in <7b8c154640e6442cbc93e4644732d128>:0 
  at LiteDB.Engine.LiteEngine..ctor (LiteDB.Engine.EngineSettings settings) [0x00173] in <7b8c154640e6442cbc93e4644732d128>:0 
  at LiteDB.ConnectionString.CreateEngine () [0x0004a] in <7b8c154640e6442cbc93e4644732d128>:0 
  at LiteDB.LiteDatabase..ctor (LiteDB.ConnectionString connectionString, LiteDB.BsonMapper mapper) [0x0002e] in <7b8c154640e6442cbc93e4644732d128>:0 
  at LiteDB.LiteDatabase..ctor (System.String connectionString, LiteDB.BsonMapper mapper) [0x00007] in <7b8c154640e6442cbc93e4644732d128>:0 
  at MonkeyCache.LiteDB.Barrel..ctor (System.String cacheDirectory) [0x00059] in D:\a\1\s\src\MonkeyCache.LiteDB\Barrel.cs:68 
  at MonkeyCache.LiteDB.Barrel.get_Current () [0x00000] in D:\a\1\s\src\MonkeyCache.LiteDB\Barrel.cs:34 
  at CardiffMobileApp.Services.Cache.CacheService.IsExpired (System.String key) [0x00001] in D:\WS\Azure\App\CardiffMobileApp\CardiffMobileApp\Services\Cache\CacheService.cs:56 
  at CardiffMobileApp.Services.Cache.CacheService.Get[T] (System.String key, System.Boolean allowExpired) [0x00001] in D:\WS\Azure\App\CardiffMobileApp\CardiffMobileApp\Services\Cache\CacheService.cs:49 
  at CardiffMobileApp.Services.ReportIt.ReportItService.GetData () [0x0004a] in D:\WS\Azure\App\CardiffMobileApp\CardiffMobileApp\Services\ReportIt\ReportItService.cs:42

I’ve implemented MonkeyCache by creating an Interface and wrapped the methods we use. When the class is created it provided the encryption key -