diff --git a/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py b/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py
index 4216cd46cf..e26b60c4d3 100644
--- a/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py
+++ b/api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py
@@ -177,7 +177,7 @@ class EasyUIBasedGenerateTaskPipeline(BasedGenerateTaskPipeline, MessageCycleMan
             else:
                 continue
 
-        raise Exception("Queue listening stopped unexpectedly.")
+        raise RuntimeError("queue listening stopped unexpectedly.")
 
     def _to_stream_response(
         self, generator: Generator[StreamResponse, None, None]
diff --git a/api/core/app/task_pipeline/exc.py b/api/core/app/task_pipeline/exc.py
new file mode 100644
index 0000000000..e4b4168d08
--- /dev/null
+++ b/api/core/app/task_pipeline/exc.py
@@ -0,0 +1,17 @@
+class TaskPipilineError(ValueError):
+    pass
+
+
+class RecordNotFoundError(TaskPipilineError):
+    def __init__(self, record_name: str, record_id: str):
+        super().__init__(f"{record_name} with id {record_id} not found")
+
+
+class WorkflowRunNotFoundError(RecordNotFoundError):
+    def __init__(self, workflow_run_id: str):
+        super().__init__("WorkflowRun", workflow_run_id)
+
+
+class WorkflowNodeExecutionNotFoundError(RecordNotFoundError):
+    def __init__(self, workflow_node_execution_id: str):
+        super().__init__("WorkflowNodeExecution", workflow_node_execution_id)
diff --git a/api/core/app/task_pipeline/workflow_cycle_manage.py b/api/core/app/task_pipeline/workflow_cycle_manage.py
index 72e4c796c3..df7dbace0e 100644
--- a/api/core/app/task_pipeline/workflow_cycle_manage.py
+++ b/api/core/app/task_pipeline/workflow_cycle_manage.py
@@ -58,6 +58,8 @@ from models.workflow import (
     WorkflowRunStatus,
 )
 
+from .exc import WorkflowNodeExecutionNotFoundError, WorkflowRunNotFoundError
+
 
 class WorkflowCycleManage:
     _application_generate_entity: Union[AdvancedChatAppGenerateEntity, WorkflowAppGenerateEntity]
@@ -898,7 +900,7 @@ class WorkflowCycleManage:
         workflow_run = db.session.query(WorkflowRun).filter(WorkflowRun.id == workflow_run_id).first()
 
         if not workflow_run:
-            raise Exception(f"Workflow run not found: {workflow_run_id}")
+            raise WorkflowRunNotFoundError(workflow_run_id)
 
         return workflow_run
 
@@ -911,6 +913,6 @@ class WorkflowCycleManage:
         workflow_node_execution = self._wip_workflow_node_executions.get(node_execution_id)
 
         if not workflow_node_execution:
-            raise Exception(f"Workflow node execution not found: {node_execution_id}")
+            raise WorkflowNodeExecutionNotFoundError(node_execution_id)
 
         return workflow_node_execution
diff --git a/api/core/model_runtime/model_providers/huggingface_tei/text_embedding/text_embedding.py b/api/core/model_runtime/model_providers/huggingface_tei/text_embedding/text_embedding.py
index 284429b741..a8a13313db 100644
--- a/api/core/model_runtime/model_providers/huggingface_tei/text_embedding/text_embedding.py
+++ b/api/core/model_runtime/model_providers/huggingface_tei/text_embedding/text_embedding.py
@@ -157,7 +157,6 @@ class HuggingfaceTeiTextEmbeddingModel(TextEmbeddingModel):
                 headers["Authorization"] = f"Bearer {api_key}"
 
             extra_args = TeiHelper.get_tei_extra_parameter(server_url, model, headers)
-            print(extra_args)
             if extra_args.model_type != "embedding":
                 raise CredentialsValidateFailedError("Current model is not a embedding model")
 
diff --git a/api/core/variables/variables.py b/api/core/variables/variables.py
index f9268b52e6..973e420961 100644
--- a/api/core/variables/variables.py
+++ b/api/core/variables/variables.py
@@ -90,5 +90,5 @@ class FileVariable(FileSegment, Variable):
     pass
 
 
-class ArrayFileVariable(ArrayFileSegment, Variable):
+class ArrayFileVariable(ArrayFileSegment, ArrayVariable):
     pass
diff --git a/api/core/workflow/graph_engine/graph_engine.py b/api/core/workflow/graph_engine/graph_engine.py
index d7d33c65fc..854036b2c1 100644
--- a/api/core/workflow/graph_engine/graph_engine.py
+++ b/api/core/workflow/graph_engine/graph_engine.py
@@ -612,8 +612,8 @@ class GraphEngine:
         max_retries = node_instance.node_data.retry_config.max_retries
         retry_interval = node_instance.node_data.retry_config.retry_interval_seconds
         retries = 0
-        shoudl_continue_retry = True
-        while shoudl_continue_retry and retries <= max_retries:
+        should_continue_retry = True
+        while should_continue_retry and retries <= max_retries:
             try:
                 # run node
                 retry_start_at = datetime.now(UTC).replace(tzinfo=None)
@@ -692,7 +692,7 @@ class GraphEngine:
                                         parent_parallel_id=parent_parallel_id,
                                         parent_parallel_start_node_id=parent_parallel_start_node_id,
                                     )
-                                    shoudl_continue_retry = False
+                                    should_continue_retry = False
                                 else:
                                     yield NodeRunFailedEvent(
                                         error=route_node_state.failed_reason or "Unknown error.",
@@ -706,7 +706,7 @@ class GraphEngine:
                                         parent_parallel_id=parent_parallel_id,
                                         parent_parallel_start_node_id=parent_parallel_start_node_id,
                                     )
-                                shoudl_continue_retry = False
+                                should_continue_retry = False
                             elif run_result.status == WorkflowNodeExecutionStatus.SUCCEEDED:
                                 if node_instance.should_continue_on_error and self.graph.edge_mapping.get(
                                     node_instance.node_id
@@ -758,7 +758,7 @@ class GraphEngine:
                                     parent_parallel_id=parent_parallel_id,
                                     parent_parallel_start_node_id=parent_parallel_start_node_id,
                                 )
-                                shoudl_continue_retry = False
+                                should_continue_retry = False
 
                             break
                         elif isinstance(item, RunStreamChunkEvent):
diff --git a/api/tests/unit_tests/core/app/segments/test_variables.py b/api/tests/unit_tests/core/app/segments/test_variables.py
index 0c264c15a0..426557c716 100644
--- a/api/tests/unit_tests/core/app/segments/test_variables.py
+++ b/api/tests/unit_tests/core/app/segments/test_variables.py
@@ -2,6 +2,8 @@ import pytest
 from pydantic import ValidationError
 
 from core.variables import (
+    ArrayFileVariable,
+    ArrayVariable,
     FloatVariable,
     IntegerVariable,
     ObjectVariable,
@@ -81,3 +83,8 @@ def test_variable_to_object():
     assert var.to_object() == 3.14
     var = SecretVariable(name="secret", value="secret_value")
     assert var.to_object() == "secret_value"
+
+
+def test_array_file_variable_is_array_variable():
+    var = ArrayFileVariable(name="files", value=[])
+    assert isinstance(var, ArrayVariable)
diff --git a/web/app/components/base/modal/index.tsx b/web/app/components/base/modal/index.tsx
index 3040cdb00b..26cde5fce3 100644
--- a/web/app/components/base/modal/index.tsx
+++ b/web/app/components/base/modal/index.tsx
@@ -39,7 +39,7 @@ export default function Modal({
           leaveFrom="opacity-100"
           leaveTo="opacity-0"
         >
-          <div className="fixed inset-0 bg-background-overlay-fullscreen" />
+          <div className="fixed inset-0 bg-background-overlay" />
         </Transition.Child>
 
         <div