private async Task <bool> TestTokensRepository(StringBuilder sb)
        {
            try
            {
                await _tokensRepository.GetAllAsync();
            }
            catch (Exception e)
            {
                AddError(sb, $"The 'TokensRepository' throws an error {e}.");
                return(true);
            }

            AddText(sb, "The 'TokensRepository' checked.");
            return(true);
        }