Hi,

We are trying to upgrade our umbraco project ( v8.02) to the latest version (8.1). But after starting the upgrade, an error occurs. (See screenshot + logging for details.

What can we do to fix this issue?

Arie

{ "@t": "2019-07-11T08:25:32.2442674Z", "@mt": "Database configuration failed", "@l": "Error", "@x": "Newtonsoft.Json.JsonReaderException: Unexpected character encountered while parsing value: <. Path '', line 0, position 0.\r\n at Newtonsoft.Json.JsonTextReader.ParseValue() in //Src/Newtonsoft.Json/JsonTextReader.cs:line 1706\r\n at Newtonsoft.Json.JsonTextReader.Read() in //Src/Newtonsoft.Json/JsonTextReader.cs:line 419\r\n at Newtonsoft.Json.JsonReader.ReadForType(JsonContract contract, Boolean hasConverter) in //Src/Newtonsoft.Json/JsonReader.cs:line 1195\r\n at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent) in //Src/Newtonsoft.Json/Serialization/JsonSerializerInternalReader.cs:line 196\r\n at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType) in //Src/Newtonsoft.Json/JsonSerializer.cs:line 907\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings) in //Src/Newtonsoft.Json/JsonConvert.cs:line 828\r\n at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings) in //Src/Newtonsoft.Json/JsonConvert.cs:line 786\r\n at Umbraco.Core.Migrations.Upgrade.V810.ConvertTinyMceAndGridMediaUrlsToLocalLink.Migrate() in d:\a\1\s\src\Umbraco.Core\Migrations\Upgrade\V81_0\ConvertTinyMceAndGridMediaUrlsToLocalLink.cs:line 42\r\n at Umbraco.Core.Migrations.MigrationBase.Umbraco.Core.Migrations.IMigration.Migrate() in d:\a\1\s\src\Umbraco.Core\Migrations\MigrationBase.cs:line 73\r\n at Umbraco.Core.Migrations.MigrationPlan.Execute(IScope scope, String fromState, IMigrationBuilder migrationBuilder, ILogger logger) in d:\a\1\s\src\Umbraco.Core\Migrations\MigrationPlan.cs:line 309\r\n at Umbraco.Core.Migrations.Upgrade.Upgrader.Execute(IScopeProvider scopeProvider, IMigrationBuilder migrationBuilder, IKeyValueService keyValueService, ILogger logger) in d:\a\1\s\src\Umbraco.Core\Migrations\Upgrade\Upgrader.cs:line 67\r\n at Umbraco.Core.Migrations.Install.DatabaseBuilder.UpgradeSchemaAndData(MigrationPlan plan) in d:\a\1\s\src\Umbraco.Core\Migrations\Install\DatabaseBuilder.cs:line 498", "SourceContext": "Umbraco.Core.Migrations.Install.DatabaseBuilder", "ProcessId": 15720, "ProcessName": "iisexpress", "ThreadId": 36, "AppDomainId": 2, "AppDomainAppId": "-", "MachineName": "-", "Log4NetLevel": "ERROR", "HttpRequestNumber": 9, "HttpRequestId": "ba191e89-f044-4b22-b687-d15034e01132" }