fix input text action with no text in GET steps API (#421)

skyvern/forge/agent.py

@@ -18,7 +18,6 @@ from skyvern.exceptions import (
     InvalidWorkflowTaskURLState,
     MissingBrowserStatePage,
     StepTerminationError,
-    StepUnableToExecuteError,
     TaskNotFound,
 )
 from skyvern.forge import app
@@ -37,7 +36,6 @@ from skyvern.forge.sdk.workflow.models.workflow import Workflow, WorkflowRun
 from skyvern.webeye.actions.actions import (
     Action,
     ActionType,
-    ActionTypeUnion,
     CompleteAction,
     UserDefinedError,
     WebAction,
@@ -53,7 +51,7 @@ LOG = structlog.get_logger()
 
 
 class ActionLinkedNode:
-    def __init__(self, action: ActionTypeUnion) -> None:
+    def __init__(self, action: Action) -> None:
         self.action = action
         self.next: ActionLinkedNode | None = None
 
@@ -330,16 +328,9 @@ class ForgeAgent:
 
             return step, detailed_output, next_step
         # TODO (kerem): Let's add other exceptions that we know about here as custom exceptions as well
-        except StepUnableToExecuteError:
-            LOG.error(
-                "Step cannot be executed. Task execution stopped",
-                task_id=task.task_id,
-                step_id=step.step_id,
-            )
-            raise
         except StepTerminationError as e:
             LOG.error(
-                "Step cannot be executed. Task failed.",
+                "Step cannot be executed. Task terminated",
                 task_id=task.task_id,
                 step_id=step.step_id,
             )
@@ -841,7 +832,7 @@ class ForgeAgent:
         # Get action results from the last app.SETTINGS.PROMPT_ACTION_HISTORY_WINDOW steps
         steps = await app.DATABASE.get_task_steps(task_id=task.task_id, organization_id=task.organization_id)
         window_steps = steps[-1 * SettingsManager.get_settings().PROMPT_ACTION_HISTORY_WINDOW :]
-        actions_and_results: list[tuple[ActionTypeUnion, list[ActionResult]]] = []
+        actions_and_results: list[tuple[Action, list[ActionResult]]] = []
         for window_step in window_steps:
             if window_step.output and window_step.output.actions_and_results:
                 actions_and_results.extend(window_step.output.actions_and_results)

skyvern/forge/agent_functions.py

@@ -1,6 +1,6 @@
 from playwright.async_api import Page
 
-from skyvern.exceptions import StepUnableToExecuteError
+from skyvern.exceptions import StepTerminationError
 from skyvern.forge import app
 from skyvern.forge.async_operations import AsyncOperation
 from skyvern.forge.sdk.models import Organization, Step, StepStatus
@@ -34,7 +34,7 @@ class AgentFunction:
 
         can_execute = has_valid_task_status and has_valid_step_status and has_no_running_steps
         if not can_execute:
-            raise StepUnableToExecuteError(step_id=step.step_id, reason=f"Cannot execute step. Reasons: {reasons}")
+            raise StepTerminationError(step_id=step.step_id, reason="Cannot execute step. Reasons: {reasons}")
 
     def generate_async_operations(
         self,

skyvern/forge/sdk/db/client.py

@@ -309,7 +309,7 @@ class AgentDB:
                     if status is not None:
                         step.status = status
                     if output is not None:
-                        step.output = output.model_dump()
+                        step.output = output.model_dump(exclude_none=True)
                     if is_last is not None:
                         step.is_last = is_last
                     if retry_index is not None:

skyvern/forge/sdk/routes/agent_protocol.py

@@ -195,7 +195,7 @@ async def execute_agent_task_step(
             )
     step, _, _ = await app.agent.execute_step(current_org, task, step)
     return Response(
-        content=step.model_dump_json() if step else "",
+        content=step.model_dump_json(exclude_none=True) if step else "",
         status_code=200,
         media_type="application/json",
     )
@@ -402,7 +402,7 @@ async def get_agent_task_steps(
     """
     analytics.capture("skyvern-oss-agent-task-steps-get")
     steps = await app.DATABASE.get_task_steps(task_id, organization_id=current_org.organization_id)
-    return ORJSONResponse([step.model_dump() for step in steps])
+    return ORJSONResponse([step.model_dump(exclude_none=True) for step in steps])
 
 
 @base_router.get(