simstudioai · waleedlatif1 · Feb 9, 2026 · Feb 9, 2026 · Feb 9, 2026
diff --git a/.../[workflowId]/components/panel/components/deploy/components/deploy-modal/deploy-modal.tsx b/.../[workflowId]/components/panel/components/deploy/components/deploy-modal/deploy-modal.tsx
@@ -19,6 +19,7 @@ import {
 import { getBaseUrl } from '@/lib/core/utils/urls'
 import { getInputFormatExample as getInputFormatExampleUtil } from '@/lib/workflows/operations/deployment-utils'
 import { useUserPermissionsContext } from '@/app/workspace/[workspaceId]/providers/workspace-permissions-provider'
+import { runPreDeployChecks } from '@/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/hooks/use-predeploy-checks'
 import { CreateApiKeyModal } from '@/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/api-keys/components'
 import { startsWithUuid } from '@/executor/constants'
 import { useA2AAgentByWorkflow } from '@/hooks/queries/a2a/agents'
@@ -38,6 +39,7 @@ import { useWorkspaceSettings } from '@/hooks/queries/workspace'
 import { usePermissionConfig } from '@/hooks/use-permission-config'
 import { useSettingsModalStore } from '@/stores/modals/settings/store'
 import { useWorkflowRegistry } from '@/stores/workflows/registry/store'
+import { mergeSubblockState } from '@/stores/workflows/utils'
 import { useWorkflowStore } from '@/stores/workflows/workflow/store'
 import type { WorkflowState } from '@/stores/workflows/workflow/types'
 import { A2aDeploy } from './components/a2a/a2a'
@@ -335,6 +337,20 @@ export function DeployModal({
     setDeployError(null)
     setDeployWarnings([])
 
+    const { blocks, edges, loops, parallels } = useWorkflowStore.getState()
+    const liveBlocks = mergeSubblockState(blocks, workflowId)
+    const checkResult = runPreDeployChecks({
+      blocks: liveBlocks,
+      edges,
+      loops,
+      parallels,
+      workflowId,
+    })
+    if (!checkResult.passed) {
+      setDeployError(checkResult.error || 'Pre-deploy validation failed')
+      return
+    }
+
     try {
       const result = await deployMutation.mutateAsync({ workflowId, deployChatEnabled: false })
       if (result.warnings && result.warnings.length > 0) {

diff --git a/...e/[workspaceId]/w/[workflowId]/components/panel/components/deploy/hooks/use-deployment.ts b/...e/[workspaceId]/w/[workflowId]/components/panel/components/deploy/hooks/use-deployment.ts
@@ -2,9 +2,6 @@ import { useCallback, useState } from 'react'
 import { createLogger } from '@sim/logger'
 import { useNotificationStore } from '@/stores/notifications'
 import { useWorkflowRegistry } from '@/stores/workflows/registry/store'
-import { mergeSubblockState } from '@/stores/workflows/utils'
-import { useWorkflowStore } from '@/stores/workflows/workflow/store'
-import { runPreDeployChecks } from './use-predeploy-checks'
 
 const logger = createLogger('useDeployment')
 
@@ -25,36 +22,16 @@ export function useDeployment({
   const [isDeploying, setIsDeploying] = useState(false)
   const setDeploymentStatus = useWorkflowRegistry((state) => state.setDeploymentStatus)
   const addNotification = useNotificationStore((state) => state.addNotification)
-  const blocks = useWorkflowStore((state) => state.blocks)
-  const edges = useWorkflowStore((state) => state.edges)
-  const loops = useWorkflowStore((state) => state.loops)
-  const parallels = useWorkflowStore((state) => state.parallels)
 
   /**
    * Handle deploy button click
    * First deploy: calls API to deploy, then opens modal on success
-   * Redeploy: validates client-side, then opens modal if valid
+   * Already deployed: opens modal directly (validation happens on Update in modal)
    */
   const handleDeployClick = useCallback(async () => {
     if (!workflowId) return { success: false, shouldOpenModal: false }
 
     if (isDeployed) {
-      const liveBlocks = mergeSubblockState(blocks, workflowId)
-      const checkResult = runPreDeployChecks({
-        blocks: liveBlocks,
-        edges,
-        loops,
-        parallels,
-        workflowId,
-      })
-      if (!checkResult.passed) {
-        addNotification({
-          level: 'error',
-          message: checkResult.error || 'Pre-deploy validation failed',
-          workflowId,
-        })
-        return { success: false, shouldOpenModal: false }
-      }
       return { success: true, shouldOpenModal: true }
     }
 
@@ -101,17 +78,7 @@ export function useDeployment({
     } finally {
       setIsDeploying(false)
     }
-  }, [
-    workflowId,
-    isDeployed,
-    blocks,
-    edges,
-    loops,
-    parallels,
-    refetchDeployedState,
-    setDeploymentStatus,
-    addNotification,
-  ])
+  }, [workflowId, isDeployed, refetchDeployedState, setDeploymentStatus, addNotification])
 
   return {
     isDeploying,

diff --git a/apps/sim/stores/terminal/console/store.ts b/apps/sim/stores/terminal/console/store.ts
@@ -376,6 +376,40 @@ export const useTerminalConsoleStore = create<ConsoleStore>()(
 
             return { entries: updatedEntries }
           })
+
+          if (typeof update === 'object' && update.error) {
+            const settings = getQueryClient().getQueryData<GeneralSettings>(
+              generalSettingsKeys.settings()
+            )
+            const isErrorNotificationsEnabled = settings?.errorNotificationsEnabled ?? true
+
+            if (isErrorNotificationsEnabled) {
+              try {
+                const matchingEntry = get().entries.find(
+                  (e) => e.blockId === blockId && e.executionId === executionId
+                )
+                const errorMessage = String(update.error)
+                const blockName = matchingEntry?.blockName || 'Unknown Block'
+                const displayMessage = `${blockName}: ${errorMessage}`
+                const copilotMessage = `${errorMessage}\n\nError in ${blockName}.\n\nPlease fix this.`
+
+                useNotificationStore.getState().addNotification({
+                  level: 'error',
+                  message: displayMessage,
+                  workflowId: matchingEntry?.workflowId,
+                  action: {
+                    type: 'copilot',
+                    message: copilotMessage,
+                  },
+                })
+              } catch (notificationError) {
+                logger.error('Failed to create block error notification', {
+                  blockId,
+                  error: notificationError,
+                })
+              }
+            }
+          }
         },
 
         cancelRunningEntries: (workflowId: string) => {