Import fails in 1.10.0

### Quick summary

WordPress Studio (v1.10.0) fails to import existing site backups. The application creates a clean WordPress installation instead of recognizing the provided wp-content and database dump, ultimately resulting in a CliCommandError

### Steps to reproduce

Prepare a folder containing wp-content and an SQL database dump file.

Attempt to import this folder/archive into WordPress Studio.

Observe the CLI background processes attempting to validate the site configuration.

Note that Studio ignores the backup content and proceeds to create a default site.

The import process triggers a CliCommandError and fails.

### What you expected to happen

The application should detect the wp-content and SQL dump, import the database via WP-CLI, and successfully migrate the existing site into a local environment.

### What actually happened

The import process fails with: CliCommandError: [Last error message] Failed to import site: No suitable importer found for the provided backup contents. Logs also indicate file lock issues: [Error: EEXIST: file already exists, open 'C:\Users\admin\.studio\server-files\language-packs.lock']

### Impact

One

### Available workarounds?

No and the app is unusable

### Platform

_No response_

### Logs or notes

[2026-06-15T04:33:29.317Z][info][main] Starting new session
[2026-06-15T04:33:29.325Z][info][main] Checking for update on app launch: https://public-api.wordpress.com/wpcom/v2/studio-app/updates?platform=win32&studioArch=x64&version=1.10.0
[2026-06-15T04:33:29.489Z][info][main] Sentry Logger [log]: Deleted Crashpad metadata file C:\Users\admin\AppData\Roaming\Studio\Crashpad\metadata
[2026-06-15T04:33:29.837Z][info][main] App version: 1.10.0
[2026-06-15T04:33:29.838Z][info][main] Environment: production
[2026-06-15T04:33:29.839Z][info][main] Built from commit: 206258631711953a003bba8b933c0cf75e95baf7
[2026-06-15T04:33:29.841Z][info][main] Local timezone: Europe/Moscow
[2026-06-15T04:33:29.842Z][info][main] App locale: ru
[2026-06-15T04:33:29.842Z][info][main] System locale: ru-RU
[2026-06-15T04:33:29.843Z][info][main] Used language: ru
[2026-06-15T04:33:29.937Z][info][main] Sentry Logger [log]: Found previous abnormal session
[2026-06-15T04:33:29.988Z][info][main] Setting Sentry user ID: bea7b29e-2ae0-4c93-9611-cba192e7636e
[2026-06-15T04:33:30.854Z][info][main] Sentry Logger [log]: [Offline Store]: Popping envelope from offline storage
[2026-06-15T04:33:32.231Z][erro][main] Error: Command failed: 4294967295
System.AggregateException: ��������� ���� ��� ��������� ������. ---> System.Exception: Couldn't acquire lock, is another instance running
   � Squirrel.SingleGlobalInstance..ctor(String key, TimeSpan timeOut)
   � Squirrel.UpdateManager.<acquireUpdateLock>b__33_0()
   � System.Threading.Tasks.Task`1.InnerInvoke()
   � System.Threading.Tasks.Task.Execute()
--- ����� ����������� ����� �� ����������� ������������, ��� �������� ���������� ---
   � System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   � System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   � Squirrel.UpdateManager.<CheckForUpdate>d__8.MoveNext()
--- ����� ����������� ����� �� ����������� ������������, ��� �������� ���������� ---
   � System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   � System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   � Squirrel.Update.Program.<CheckForUpdate>d__8.MoveNext()
   --- ����� ����������� ����������� ����� ���������� ---
   � System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   � Squirrel.Update.Program.executeCommandLine(String[] args)
   � Squirrel.Update.Program.main(String[] args)
   � Squirrel.Update.Program.Main(String[] args)
---> (���������� ���������� #0) System.Exception: Couldn't acquire lock, is another instance running
   � Squirrel.SingleGlobalInstance..ctor(String key, TimeSpan timeOut)
   � Squirrel.UpdateManager.<acquireUpdateLock>b__33_0()
   � System.Threading.Tasks.Task`1.InnerInvoke()
   � System.Threading.Tasks.Task.Execute()
--- ����� ����������� ����� �� ����������� ������������, ��� �������� ���������� ---
   � System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   � System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   � Squirrel.UpdateManager.<CheckForUpdate>d__8.MoveNext()
--- ����� ����������� ����� �� ����������� ������������, ��� �������� ���������� ---
   � System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   � System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   � Squirrel.Update.Program.<CheckForUpdate>d__8.MoveNext()<---


    at ChildProcess.<anonymous> (node:electron/js2c/browser_init:2:11241)
    at ChildProcess.emit (node:events:521:24)
    at ChildProcess.emit (node:domain:489:12)
    at ChildProcess._handle.onexit (node:internal/child_process:295:12)
[2026-06-15T04:33:32.509Z][info][main] Sentry Logger [log]: [Offline Store]: Popping envelope from offline storage
[2026-06-15T04:36:51.652Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Validating site configuration…
[2026-06-15T04:36:51.658Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Creating site directory…
[2026-06-15T04:36:51.663Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Copying bundled WordPress…
[2026-06-15T04:37:05.080Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Setting up SQLite integration…
[2026-06-15T04:37:05.343Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Assigning port…
[2026-06-15T04:37:05.764Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Saving site…
[2026-06-15T04:37:05.959Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] Site created successfully

Run "studio site start" to start the site.
[2026-06-15T04:41:33.408Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T04:41:59.829Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] null
[2026-06-15T04:46:56.059Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T04:47:24.073Z][info][main] Sentry Logger [log]: Utility process has killed
[2026-06-15T05:11:47.681Z][info][main] Starting new session
[2026-06-15T05:11:47.806Z][info][main] Checking for update on app launch: https://public-api.wordpress.com/wpcom/v2/studio-app/updates?platform=win32&studioArch=x64&version=1.10.0
[2026-06-15T05:11:53.616Z][info][main] Sentry Logger [log]: Deleted Crashpad metadata file C:\Users\admin\AppData\Roaming\Studio\Crashpad\metadata
[2026-06-15T05:11:55.971Z][info][main] Sentry Logger [log]: [Offline Store]: Popping envelope from offline storage
[2026-06-15T05:12:02.547Z][info][main] App version: 1.10.0
[2026-06-15T05:12:02.548Z][info][main] Environment: production
[2026-06-15T05:12:02.548Z][info][main] Built from commit: 206258631711953a003bba8b933c0cf75e95baf7
[2026-06-15T05:12:02.549Z][info][main] Local timezone: Europe/Moscow
[2026-06-15T05:12:02.550Z][info][main] App locale: ru
[2026-06-15T05:12:02.550Z][info][main] System locale: ru-RU
[2026-06-15T05:12:02.551Z][info][main] Used language: ru
[2026-06-15T05:12:05.050Z][info][main] Sentry Logger [log]: Found previous abnormal session
[2026-06-15T05:12:06.002Z][info][main] Setting Sentry user ID: bea7b29e-2ae0-4c93-9611-cba192e7636e
[2026-06-15T05:12:14.187Z][info][main] Sentry Logger [log]: [Offline Store]: Popping envelope from offline storage
[2026-06-15T05:16:48.665Z][info][main] Starting server for 'Мой веб-сайт WordPress'
[2026-06-15T05:17:05.420Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Starting process daemon…
[2026-06-15T05:17:05.444Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Loading site…
[2026-06-15T05:17:05.462Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Setting up SQLite integration, if needed…
[2026-06-15T05:17:05.991Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Starting WordPress server…
[2026-06-15T05:17:05.996Z][info][main] [CLI - 5abea16a-b711-4953-b2bd-13ba8c2556a2] Starting WordPress server…
[2026-06-15T05:18:03.546Z][info][main] Server started for 'Мой веб-сайт WordPress'
[2026-06-15T05:18:45.425Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:18:45.427Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:18:45.428Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:18:51.538Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] null
[2026-06-15T05:19:27.697Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] null
[2026-06-15T05:19:30.822Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:19:55.866Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:19:55.868Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:20:28.965Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:20:28.968Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:21:07.946Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:22:48.445Z][info][main] [CLI - site ID 5abea16a-b711-4953-b2bd-13ba8c2556a2] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:22:49.017Z][info][main] [CLI - a21fe11f-531a-4e21-afba-1f652bdb9fac] Validating site configuration…
[2026-06-15T05:22:49.032Z][info][main] [CLI - a21fe11f-531a-4e21-afba-1f652bdb9fac] Creating site directory…
[2026-06-15T05:22:49.036Z][info][main] [CLI - a21fe11f-531a-4e21-afba-1f652bdb9fac] Copying bundled WordPress…
[2026-06-15T05:23:16.664Z][info][main] [CLI - a21fe11f-531a-4e21-afba-1f652bdb9fac] Setting up SQLite integration…
[2026-06-15T05:23:16.996Z][info][main] [CLI - a21fe11f-531a-4e21-afba-1f652bdb9fac] Assigning port…
[2026-06-15T05:23:17.438Z][info][main] [CLI - a21fe11f-531a-4e21-afba-1f652bdb9fac] Saving site…
[2026-06-15T05:23:17.632Z][info][main] [CLI - site ID a21fe11f-531a-4e21-afba-1f652bdb9fac] Site created successfully
[2026-06-15T05:23:17.637Z][info][main] [CLI - site ID a21fe11f-531a-4e21-afba-1f652bdb9fac] 
Run "studio site start" to start the site.
[2026-06-15T05:25:24.321Z][erro][main] Error occurred in handler for 'importSite': CliCommandError: [Last error message] Failed to import site: No suitable importer found for the provided backup contents
  [Base message] CLI command failed
  [Exit code] 1
[2026-06-15T05:25:27.907Z][info][main] [CLI - site ID a21fe11f-531a-4e21-afba-1f652bdb9fac] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:25:38.110Z][info][main] Deleting site a21fe11f-531a-4e21-afba-1f652bdb9fac
[2026-06-15T05:25:49.091Z][info][main] Deleting site 5abea16a-b711-4953-b2bd-13ba8c2556a2
[2026-06-15T05:26:03.642Z][info][main] [CLI - site ID a21fe11f-531a-4e21-afba-1f652bdb9fac] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:26:03.645Z][info][main] [CLI - site ID a21fe11f-531a-4e21-afba-1f652bdb9fac] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:26:24.860Z][erro][main] (node:3652) electron: Failed to load URL: http://localhost:8882/?studio-hide-adminbar with error: ERR_CONNECTION_RESET
(Use `Studio --trace-warnings ...` to show where the warning was created)
[2026-06-15T05:26:25.134Z][erro][main] Failed to get theme details via WP-CLI {
  "exitCode": 1,
  "stdout": "",
  "stderr": "Failed to set up dependency language packs: [Error: EEXIST: file already exists, open 'C:\\Users\\admin\\.studio\\server-files\\language-packs.lock'] {\n  errno: -4075,\n  code: 'EEXIST',\n  syscall: 'open',\n  path: 'C:\\\\Users\\\\admin\\\\.studio\\\\server-files\\\\language-packs.lock'\n}\n"
}
[2026-06-15T05:26:25.158Z][erro][main] Failed to get site icon via WP-CLI {
  "exitCode": 1,
  "stdout": "",
  "stderr": "Failed to run WP-CLI command: WordPress server process exited unexpectedly"
}
[2026-06-15T05:26:25.182Z][erro][main] Failed to get theme details via WP-CLI {
  "exitCode": 1,
  "stdout": "",
  "stderr": "Failed to run WP-CLI command: WordPress server process exited unexpectedly"
}
[2026-06-15T05:26:38.656Z][erro][main] Failed to get theme details via WP-CLI {
  "exitCode": 1,
  "stdout": "",
  "stderr": "The specified directory is not added to Studio."
}
[2026-06-15T05:50:06.523Z][info][main] [CLI - 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] Validating site configuration…
[2026-06-15T05:50:06.533Z][info][main] [CLI - 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] Creating site directory…
[2026-06-15T05:50:06.538Z][info][main] [CLI - 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] Copying bundled WordPress…
[2026-06-15T05:50:23.403Z][info][main] [CLI - 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] Setting up SQLite integration…
[2026-06-15T05:50:23.812Z][info][main] [CLI - 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] Assigning port…
[2026-06-15T05:50:24.208Z][info][main] [CLI - 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] Saving site…
[2026-06-15T05:50:24.306Z][info][main] [CLI - site ID 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] Site created successfully
[2026-06-15T05:50:24.309Z][info][main] [CLI - site ID 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] 
Run "studio site start" to start the site.
[2026-06-15T05:52:37.156Z][info][main] [CLI - site ID 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] {"name":"Twenty Twenty-Five","path":"\/wordpress\/wp-content\/themes\/twentytwentyfive","slug":"twentytwentyfive","isBlockTheme":true,"supportsWidgets":false,"supportsMenus":false}
[2026-06-15T05:53:10.859Z][info][main] [CLI - site ID 1f8c944b-29a6-4c5a-8d7f-bc66f9759305] null
[2026-06-15T05:53:18.400Z][erro][main] Error occurred in handler for 'importSite': CliCommandError: [Last error message] Failed to import site: No suitable importer found for the provided backup contents
  [Base message] CLI command failed
  [Exit code] 1


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Import fails in 1.10.0 #3826

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Import fails in 1.10.0 #3826

Description

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