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Error SqliteConnection

I'm have a problem when I try to use DbContext.SaveChanges() concurrently. It basically throws me this error:

System.InvalidOperationException: SqliteConnection does not support nested transactions.
   en Microsoft.Data.Sqlite.SqliteConnection.BeginTransaction(IsolationLevel isolationLevel)
   en Microsoft.Data.Sqlite.SqliteConnection.BeginDbTransaction(IsolationLevel isolationLevel)
   en System.Data.Common.DbConnection.BeginTransaction(IsolationLevel isolationLevel)
   en Microsoft.EntityFrameworkCore.Storage.RelationalConnection.BeginTransaction(IsolationLevel isolationLevel)
   en Microsoft.EntityFrameworkCore.Storage.RelationalConnection.BeginTransaction()
   en Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.Execute(IEnumerable`1 commandBatches, IRelationalConnection connection)
   en Microsoft.EntityFrameworkCore.Storage.RelationalDatabase.SaveChanges(IList`1 entries)
   en Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(IList`1 entriesToSave)
   en Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(DbContext _, Boolean acceptAllChangesOnSuccess)
   en Microsoft.EntityFrameworkCore.Storage.Internal.NoopExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   en Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChanges(Boolean acceptAllChangesOnSuccess)
   en Microsoft.EntityFrameworkCore.DbContext.SaveChanges(Boolean acceptAllChangesOnSuccess)
   en Microsoft.EntityFrameworkCore.DbContext.SaveChanges()

I have a single connection which is shared by each DbContext created by request. Everything works fine when it comes to reading information but in writing it throws me the error: SqliteConnection does not support nested transactions. What can i do to fix it?
SAlu2s

Further technical details

Microsoft.EntityFrameworkCore 3.1.14
Microsoft.EntityFrameworkCore.Design 3.1.14
Microsoft.EntityFrameworkCore.Sqlite.Core 3.1.14
SQLitePCLRaw.bundle_e_sqlcipher 2.0.4

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