Greetings to everyone! We keep getting an eror in 3CX Bitrix24 integration module. Error parsing authorization code. Please report this error to 3CX. System.ArgumentOutOfRangeException: Index is out of bounds. Index must be a positive integer and it should not exceed the size of collection. Parameter name: startIndex in System.String.IndexOf(Char value, Int32 startIndex, Int32 count) in Bitrix24.OAuth2.LoginForm.getAuthorizationCode(String pageContent) 3CX Phone System 15.5 SP2 Pro Our instance of Bitrix24 is installed on a local server, not in bitrix24 cloud. Settings were carried out according to https://www.3cx.ru/docs/bitrix24-crm-integration/ Does anyone have any ideas what's the reason for the error and how to fix it?