fix[web]: fix task querying

Author: yaugenst-flex

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 - Bug in `LayerRefinementSpec` that refines grids outside the layer region when one in-plane dimension is of size infinity.
+- Querying tasks was sometimes erroring unexpectedly.
 
 ## [2.8.0] - 2025-03-04
 

tidy3d/web/core/http_util.py

@@ -140,10 +140,12 @@ def wrapper(*args, **kwargs):
         if not resp.text:
             return None
         result = resp.json()
-        warning = result.get("warning")
-        if warning:
-            log = get_logger()
-            log.warning(warning)
+
+        if isinstance(result, dict):
+            warning = result.get("warning")
+            if warning:
+                log = get_logger()
+                log.warning(warning)
 
         return result.get("data") if "data" in result else result