Fix response model for crawl errors API endpoint (#1939)

Follow-up fix for #1920 for crawl errors endpoint, which returns a 500
following #1928, caught in nightly tests.

backend/btrixcloud/crawls.py

@@ -41,6 +41,7 @@ from .models import (
     User,
     PaginatedCrawlOutResponse,
     PaginatedSeedResponse,
+    PaginatedCrawlErrorResponse,
     RUNNING_AND_STARTING_STATES,
     SUCCESSFUL_STATES,
     NON_RUNNING_STATES,
@@ -1471,7 +1472,9 @@ def init_crawls_api(crawl_manager: CrawlManager, app, user_dep, *args):
         raise HTTPException(status_code=400, detail="crawl_not_finished")
 
     @app.get(
-        "/orgs/{oid}/crawls/{crawl_id}/errors", tags=["crawls"], response_model=bytes
+        "/orgs/{oid}/crawls/{crawl_id}/errors",
+        tags=["crawls"],
+        response_model=PaginatedCrawlErrorResponse,
     )
     async def get_crawl_errors(
         crawl_id: str,

backend/btrixcloud/models.py

@@ -930,6 +930,17 @@ class CrawlScaleResponse(BaseModel):
     scaled: int
 
 
+# ============================================================================
+class CrawlError(BaseModel):
+    """Crawl error"""
+
+    timestamp: str
+    logLevel: str
+    context: str
+    message: str
+    details: Any
+
+
 # ============================================================================
 
 ### UPLOADED CRAWLS ###
@@ -2223,3 +2234,10 @@ class PaginatedWebhookNotificationResponse(PaginatedResponse):
     """Response model for paginated webhook notifications"""
 
     items: List[WebhookNotification]
+
+
+# ============================================================================
+class PaginatedCrawlErrorResponse(PaginatedResponse):
+    """Response model for crawl errors"""
+
+    items: List[CrawlError]