Invalid object name 'umbracoLock' error in Umbraco 7

We are running Umbraco 7.15.1.

We have experiencing lots of the same db update error log messages.

 2019-10-29 07:53:29,921 [P159632/D2/T16] ERROR Umbraco.Web.Strategies.ServerRegistrationEventHandler - Failed to update server record in database.
System.Data.SqlClient.SqlException (0x80131904): Invalid object name 'umbracoLock'.
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)
   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
   at StackExchange.Profiling.Data.ProfiledDbCommand.ExecuteNonQuery() in c:\Code\github\SamSaffron\MiniProfiler\StackExchange.Profiling\Data\ProfiledDbCommand.cs:line 266
   at Umbraco.Core.Persistence.PetaPocoCommandExtensions.<>c__DisplayClass2_0.<ExecuteNonQueryWithRetry>b__0()
   at Umbraco.Core.Persistence.FaultHandling.RetryPolicy.ExecuteAction[TResult](Func`1 func)
   at Umbraco.Core.Persistence.PetaPocoCommandExtensions.ExecuteNonQueryWithRetry(IDbCommand command, RetryPolicy cmdRetryPolicy, RetryPolicy conRetryPolicy)
   at Umbraco.Core.Persistence.PetaPocoCommandExtensions.ExecuteNonQueryWithRetry(IDbCommand command, RetryPolicy retryPolicy)
   at Umbraco.Core.Persistence.PetaPocoCommandExtensions.ExecuteNonQueryWithRetry(IDbCommand command)
   at Umbraco.Core.Persistence.Database.Execute(String sql, Object[] args)
   at Umbraco.Core.Persistence.DatabaseNodeLockExtensions.AcquireLockNodeWriteLock(UmbracoDatabase database, Int32 nodeId)
   at Umbraco.Core.Persistence.LockingRepository`1.WithWriteLocked(Action`1 action, Boolean autoCommit)
   at Umbraco.Core.Services.ServerRegistrationService.TouchServer(String serverAddress, String serverIdentity, TimeSpan staleTimeout)
   at Umbraco.Web.Strategies.ServerRegistrationEventHandler.TouchServerTask.PerformRun()
ClientConnectionId:2473f585-9e59-424b-be81-eb008a7aabf3
Error Number:208,State:1,Class:16

We had them also in the previous version (7.6.0).

Any body knows what can cause such an issue or how to find out?