diff --git a/inference/core/interfaces/http/http_api.py b/inference/core/interfaces/http/http_api.py
index 4751a6f435..0872180608 100644
--- a/inference/core/interfaces/http/http_api.py
+++ b/inference/core/interfaces/http/http_api.py
@@ -313,12 +313,12 @@ async def wrapped_route(*args, **kwargs):
             traceback.print_exc()
         except WorkflowSyntaxError as error:
             content = WorkflowErrorResponse(
-                message=error.public_message,
+                message=str(error.public_message),
                 error_type=error.__class__.__name__,
-                context=error.context,
-                inner_error_type=error.inner_error_type,
+                context=str(error.context),
+                inner_error_type=str(error.inner_error_type),
                 inner_error_message=str(error.inner_error),
-                blocks_errors=error._blocks_errors,
+                blocks_errors=error.blocks_errors,
             )
             resp = JSONResponse(status_code=400, content=content.model_dump())
         except (
@@ -448,15 +448,15 @@ async def wrapped_route(*args, **kwargs):
             traceback.print_exc()
         except StepExecutionError as error:
             content = WorkflowErrorResponse(
-                message=error.public_message,
+                message=str(error.public_message),
                 error_type=error.__class__.__name__,
-                context=error.context,
-                inner_error_type=error.inner_error_type,
+                context=str(error.context),
+                inner_error_type=str(error.inner_error_type),
                 inner_error_message=str(error.inner_error),
                 blocks_errors=[
                     WorkflowBlockError(
-                        block_id=error._block_id,
-                        block_type=error._block_type,
+                        block_id=error.block_id,
+                        block_type=error.block_type,
                     ),
                 ],
             )
diff --git a/inference/core/version.py b/inference/core/version.py
index 2846024df0..8dbd93a003 100644
--- a/inference/core/version.py
+++ b/inference/core/version.py
@@ -1,4 +1,4 @@
-__version__ = "0.37.0"
+__version__ = "0.37.1"
 
 
 if __name__ == "__main__":
diff --git a/inference/core/workflows/core_steps/loader.py b/inference/core/workflows/core_steps/loader.py
index a6b59317b0..3ade98a7a7 100644
--- a/inference/core/workflows/core_steps/loader.py
+++ b/inference/core/workflows/core_steps/loader.py
@@ -2,6 +2,7 @@
 
 from inference.core.cache import cache
 from inference.core.env import (
+    ALLOW_WORKFLOW_BLOCKS_ACCESSING_ENVIRONMENTAL_VARIABLES,
     ALLOW_WORKFLOW_BLOCKS_ACCESSING_LOCAL_STORAGE,
     API_KEY,
     WORKFLOW_BLOCKS_WRITE_DIRECTORY,
@@ -441,7 +442,7 @@
     "thread_pool_executor": None,
     "allow_access_to_file_system": ALLOW_WORKFLOW_BLOCKS_ACCESSING_LOCAL_STORAGE,
     "allowed_write_directory": WORKFLOW_BLOCKS_WRITE_DIRECTORY,
-    "allow_access_to_environmental_variables": ALLOW_WORKFLOW_BLOCKS_ACCESSING_LOCAL_STORAGE,
+    "allow_access_to_environmental_variables": ALLOW_WORKFLOW_BLOCKS_ACCESSING_ENVIRONMENTAL_VARIABLES,
 }
 
 KINDS_SERIALIZERS = {
diff --git a/inference/core/workflows/errors.py b/inference/core/workflows/errors.py
index 568c2c3ee0..5c23c6eaf2 100644
--- a/inference/core/workflows/errors.py
+++ b/inference/core/workflows/errors.py
@@ -76,12 +76,12 @@ class WorkflowDefinitionError(WorkflowCompilerError):
 class WorkflowSyntaxError(WorkflowDefinitionError):
     def __init__(
         self,
-        *args,
         blocks_errors: Optional[List[WorkflowBlockError]] = None,
+        *args,
         **kwargs,
     ):
         super().__init__(*args, **kwargs)
-        self._blocks_errors = blocks_errors
+        self.blocks_errors = blocks_errors
 
 
 class DuplicatedNameError(WorkflowDefinitionError):
@@ -139,14 +139,14 @@ class InvalidBlockBehaviourError(WorkflowExecutionEngineError):
 class StepExecutionError(WorkflowExecutionEngineError):
     def __init__(
         self,
-        *args,
         block_id: str,
         block_type: str,
+        *args,
         **kwargs,
     ):
         super().__init__(*args, **kwargs)
-        self._block_id = block_id
-        self._block_type = block_type
+        self.block_id = block_id
+        self.block_type = block_type
 
 
 class ExecutionEngineRuntimeError(WorkflowExecutionEngineError):
diff --git a/inference/core/workflows/execution_engine/v1/executor/core.py b/inference/core/workflows/execution_engine/v1/executor/core.py
index 9f4cdef7d2..f39cbd1e34 100644
--- a/inference/core/workflows/execution_engine/v1/executor/core.py
+++ b/inference/core/workflows/execution_engine/v1/executor/core.py
@@ -139,7 +139,7 @@ def safe_execute_step(
             block_type=workflow.steps[step_selector.split(".")[-1]].manifest.type,
             public_message=str(error),
             context="workflow_execution | step_execution",
-            inner_error=error,
+            inner_error=str(error),
         ) from error