can1357/oh-my-pi · error · GitHubError

proxy returned malformed issue summary payload

Error message

proxy returned malformed issue summary payload

What it means

GitHubError(500) raised by _issue_summary_from when an element of the proxy's issue list/search results is not a JSON object. Each list/search item must be a dict to build an IssueSummary; a non-dict item breaks the pagination contract and aborts the whole listing.

Source

Thrown at python/robomp/src/proxy_client.py:623

def _issue_from(data: Any) -> IssueInfo:
    if not isinstance(data, dict):
        raise GitHubError(500, "proxy returned malformed issue payload")
    labels = data.get("labels") or []
    return IssueInfo(
        repo=str(data["repo"]),
        number=int(data["number"]),
        title=str(data.get("title") or ""),
        body=str(data.get("body") or ""),
        state=str(data.get("state") or "open"),
        author=str(data.get("author") or ""),
        labels=tuple(str(x) for x in labels),
        is_pull_request=bool(data.get("is_pull_request", False)),
    )


def _issue_summary_from(data: Any) -> IssueSummary:
    if not isinstance(data, dict):
        raise GitHubError(500, "proxy returned malformed issue summary payload")
    return IssueSummary(
        repo=str(data["repo"]),
        number=int(data["number"]),
        title=str(data.get("title") or ""),
        state=str(data.get("state") or ""),
        author=str(data.get("author") or ""),
        labels=tuple(str(x) for x in (data.get("labels") or [])),
        comments=int(data.get("comments") or 0),
        updated_at=str(data.get("updated_at") or ""),
        created_at=str(data.get("created_at") or ""),
        html_url=str(data.get("html_url") or ""),
        state_reason=str(data.get("state_reason") or ""),
        is_pull_request=bool(data.get("is_pull_request")),
    )


def _index_entry_from(data: Any) -> IssueIndexEntry:
    if not isinstance(data, dict):

View on GitHub (pinned to 9690622007)

Solutions

1. Dump the raw list/search response from the proxy and locate the non-object element (its index in the array).
2. Check the proxy version against the client's expected schema; upgrade or roll back the proxy to the matching version.
3. Look for proxy-side serialization errors for specific issues (e.g. deleted or permission-denied issues serialized as null).
4. Retry the listing; if intermittent, wrap list_issues/search_issues in a retry with backoff.
5. Filter/patch at the proxy to omit or repair malformed entries instead of emitting them.

Example fix

# before
for s in client.list_issues("org/repo", state="open"):
    print(s.title)  # GitHubError 500 on one malformed item

# after
try:
    summaries = client.list_issues("org/repo", state="open")
except GitHubError as e:
    if e.status == 500:
        summaries = []  # degrade: log and continue with empty page
    else:
        raise

data = resp.json()
items = data if isinstance(data, list) else []
bad = [i for i, x in enumerate(items) if not isinstance(x, dict)]
if bad:
    raise RuntimeError(f"non-object issue summary entries at indices {bad}")

def is_issue_summary(data: object) -> bool:
    return isinstance(data, dict) and "repo" in data and "number" in data

try:
    summaries = client.list_issues("org/repo", state="open")
except GitHubError as e:
    if e.status == 500 and "malformed issue summary" in str(e):
        summaries = []
    else:
        raise

When it happens

Trigger: Calling list_issues() or search_issues() when the proxy returns a JSON array containing a non-object element (null, string, number) instead of an issue-summary object.

Common situations: Proxy serialization bug emitting null for tombstoned/deleted issues inside a list; proxy version skew where search results wrap items differently; truncated/mangled response body parsed into scalars; gateway injecting an error string into the items array.

Understand the failure class

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

Related errors

• proxy returned malformed issue payload
• proxy returned malformed issue index payload
• proxy returned malformed comment payload
• proxy returned malformed reaction payload
• proxy returned malformed review_comment payload

AI-assisted analysis of can1357/oh-my-pi@9690622007 (2026-08-31). Data as JSON: /api/errors/4bdb8c8421d8a4f7. Report an issue: GitHub.