nopSolutions/nopCommerce · error · NopException

{e.Message}

Error message

{e.Message}

What it means

In ArtificialIntelligenceService.CreateMetaTagsAsync, a try/catch wraps all AI calls (meta title, keywords, description generation). Any exception is logged via _logger.ErrorAsync then re-thrown as a new NopException(e.Message). This loses the original stack/inner detail (no innerException passed) but preserves the message text, so callers see the underlying AI error as a NopException.

Source

Thrown at src/Libraries/Nop.Services/ArtificialIntelligence/ArtificialIntelligenceService.cs:211

                var metaDescriptionQueryFormat = string.IsNullOrEmpty(_artificialIntelligenceSettings.MetaDescriptionQuery)
                    ? ArtificialIntelligenceDefaults.MetaDescriptionQuery
                    : _artificialIntelligenceSettings.MetaDescriptionQuery;
                var metaDescriptionQuery = string.Format(metaDescriptionQueryFormat, title, text, currentLanguage.Name);
                var result = await _httpClient.SendQueryAsync(metaDescriptionQuery);
                metaDescription = result.Trim('"');
            }
            else
            {
                metaDescription = currentMetaDescription;
            }

        }
        catch (Exception e)
        {
            var customer = await _workContext.GetCurrentCustomerAsync();
            await _logger.ErrorAsync(e.Message, e, customer);

            throw new NopException(e.Message);
        }

        return (metaTitle, metaKeywords, metaDescription);
    }

    /// <summary>
    /// Create meta tags by artificial intelligence
    /// </summary>
    /// <param name="entity">The entity to which need to generate meta tags</param>
    /// <param name="currentMetaTitle">Current entity meta title</param>
    /// <param name="currentMetaKeywords">Current entity meta keywords</param>
    /// <param name="currentMetaDescription">Current entity meta description</param>
    /// <param name="languageId">Target language identifier</param>
    /// <returns>
    /// A task that represents the asynchronous operation
    /// The task result contains the generated meta tags
    /// </returns>
    protected virtual async Task<(string metaTitle, string metaKeywords, string metaDescription)> CreateMetaTagsAsync<TEntity>(TEntity entity,

View on GitHub (pinned to 64bdf2ff08)

Solutions

  1. Fix the underlying AI provider error (see SendQueryAsync NopException): verify API key, quota, network, RequestTimeout.
  2. Catch NopException at the calling layer and degrade gracefully (keep existing meta tags) rather than failing the whole entity save.
  3. Ensure the entity has non-empty title/text so ValidateTitleAndTextAsync does not throw before AI calls.
  4. Check the log (the original exception is recorded with full detail) to find root cause.

Example fix

// before
var (t, k, d) = await _aiService.CreateMetaTagsAsync(entity, languageId);

// after
try
{
    var (t, k, d) = await _aiService.CreateMetaTagsAsync(entity, languageId);
}
catch (NopException)
{
    // keep existing meta tags; AI generation is non-critical
}
Defensive patterns

Strategy: try-catch

Validate before calling

// Ensure entity has title/text in target language before calling meta generation
// (delegates to ValidateTitleAndTextAsync which throws on empty)

Try / catch

try { var (t,k,d) = await _aiService.CreateMetaTagsAsync(entity, languageId); }
catch (NopException) { /* keep existing meta tags; AI generation is non-critical */ }

Prevention

When it happens

Trigger: Generating meta tags for a Product/Category/BlogPost/Manufacturer/Topic/Vendor when any of the inner SendQueryAsync calls fail (provider error, timeout) — the catch re-wraps it as NopException(e.Message).

Common situations: AI provider misconfiguration or outage during meta-tag generation; RequestTimeout too short; missing title/text passed forward after validation; transient network error to the AI endpoint.

Related errors

AI-assisted analysis of nopSolutions/nopCommerce@64bdf2ff08 (2026-08-13). Data as JSON: /api/errors/9506c91fdf88bd68. Report an issue: GitHub.