Error when trying to add an activity

[rlee1990]

I am receiving the below error when trying to add an activity:
Here is the request code:

feed.addActivity(
        request: FeedAddActivityRequest(
          feeds: [feed.fid.rawValue],
          type: 'post',
          text: caption.value,
          attachmentUploads: attachments,
          mentionedUserIds: mentionedUserIds.value.isEmpty
              ? null
              : mentionedUserIds.value,
          visibility: AddActivityRequestVisibility.public,
          expiresAt: expire.value
              ? DateTime.now().add(const Duration(days: 1)).toIso8601String()
              : null,
        ),
      );

╔╣ Request ║ POST
flutter: ║  https://feeds.stream-io-api.com/api/v2/feeds/activities?connection_id=6945844b-0a05-107f-0300-000000054e4f&user_id=5be55096-853a-4b5c-a6ba-d2c540ffb64e
flutter: ╚════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════╝
flutter: ╔ Query Parameters
flutter: ╟ connection_id: 6945844b-0a05-107f-0300-000000054e4f
flutter: ╟ user_id: 5be55096-853a-4b5c-a6ba-d2c540ffb64e
flutter: ╚════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════╝
flutter: ╔ Headers
flutter: ╟ content-type: application/json
flutter: ╟ api_key: x3nvm98d25mk
flutter: ╟ X-Stream-Client: stream-feeds-dart-dart-v0.3.0
flutter: ╟ Authorization:
flutter: ║ eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX2lkIjoiNWJlNTUwOTYtODUzYS00YjVjLWE2YmEtZDJjNTQwZmZiNjRlIiwidmFsaWRpdHlfaW5
flutter: ║ fc2Vjb25kcyI6ODY0MDAsImlhdCI6MTc2NjQyMzA5MywiZXhwIjoxNzY2NTA5NDkzfQ.0orOhWLgRZlexSeEQLl9-x-GOpApmMXsopMj8A5DttI
flutter: ╟ stream-auth-type: jwt
flutter: ╟ contentType: application/json
flutter: ╟ responseType: ResponseType.json
flutter: ╟ followRedirects: true
flutter: ╟ connectTimeout: 0:00:06.000000
flutter: ╟ receiveTimeout: 0:00:06.000000
flutter: ╚════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════╝
flutter: ╔ Body
flutter: ╟ attachments: null
flutter: ╟ collection_refs: null
flutter: ╟ custom: null
flutter: ╟ expires_at: null
flutter: ╟ feeds: [user:5be55096-853a-4b5c-a6ba-d2c540ffb64e]
flutter: ╟ filter_tags: null
flutter: ╟ id: null
flutter: ╟ interest_tags: null
flutter: ╟ location: null
flutter: ╟ mentioned_user_ids: null
flutter: ╟ parent_id: null
flutter: ╟ poll_id: null
flutter: ╟ restrict_replies: null
flutter: ╟ search_data: null
flutter: ╟ skip_enrich_url: null
flutter: ╟ text: This is just a test
flutter: ╟ type: post
flutter: ╟ visibility: public
flutter: ╟ visibility_tag: null
flutter: ╚════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════╝
flutter:
flutter: ╔╣ DioException ║ Status: 400 Bad Request
flutter: ║  https://feeds.stream-io-api.com/api/v2/feeds/activities?connection_id=6945844b-0a05-107f-0300-000000054e4f&user_id=5be55096-853a-4b5c-a6ba-d2c540ffb64e
flutter: ╚════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════╝
flutter: ╔ DioExceptionType.badResponse
flutter: ║ {"code":4,"message":"AddActivity failed with error: \"the format contains syntax errors\"","StatusCode":400,"duration":"
flutter: ║ 0.00ms","more_info":"https://getstream.io/chat/docs/api_errors_response","details":[]}

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🔗 Similar Issues

Possible Duplicates

• Post request still using V2 API #73

Related Issues

• Error trying to run on iOS #59

👤 Suggested Assignees

• rlee1990

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[xsahil03x]

Hey @rlee1990 , I am not sure what the exact issue is here so I will ask the backend team to check this. Meanwhile i am sharing the response cursor gave me while running this in the backend repo.

Issue Analysis

The error "the format contains syntax errors" occurs when adding an activity because the backend precomputes aggregation groups for all feed groups and feed views in your app. If any aggregation format has syntax errors, the entire request fails.

Root Cause

• One of your feed groups (likely the user feed group based on your feed ID) or a feed view has an aggregation format configured with invalid Pongo2 template syntax
• When you add an activity, the system tries to parse all aggregation formats to precompute aggregation groups, and the invalid format causes the failure

How to Fix

1. Identify the problematic feed group/view:

   • Check your feed group configurations (especially the user feed group)
   • Look for any feed views with aggregation formats configured
   • The format should be valid Pongo2 template syntax (e.g., {{ actor }}_{{ type }})

2. Common syntax errors in aggregation formats:

   • Unclosed brackets: {{ actor } (missing closing }})
   • Invalid filter syntax: {{ time|invalid_filter }}
   • Malformed conditionals: {% if condition %} without {% endif %}
   • Invalid variable references

3. Temporary workaround:

   • Remove or fix the aggregation format on the problematic feed group/view
   • You can set the aggregation format to null to disable aggregation for that feed group/view

To Help Debug Further

• Can you check your feed group configurations (especially the user feed group) for any aggregation formats?
• If you can share the aggregation format string (without sensitive data), we can help identify the specific syntax issue

Note: Your request payload looks correct - the issue is with the aggregation format configuration in your app settings, not with the activity data you're sending.

[rlee1990]

It is working now