I receive this error:

Caused by: java.lang.RuntimeException: Failed to update database
at org.keycloak.connections.mongo.updater.impl.DefaultMongoUpdaterProvider.update(DefaultMongoUpdaterProvider.java:93)
at org.keycloak.connections.mongo.DefaultMongoConnectionFactoryProvider.lazyInit(DefaultMongoConnectionFactoryProvider.java:95)
... 35 more
Caused by: com.mongodb.CommandFailureException: { "serverUsed" : "kcdb/172.17.5.191:27017" , "nIndexesWas" : 1 , "ok" : 0.0 , "errmsg" : "index not found with name [realmId_1_name_1]"}
at com.mongodb.CommandResult.getException(CommandResult.java:71)
at com.mongodb.CommandResult.throwOnError(CommandResult.java:110)