Cannot save documents: callback always returns status code 7 (force-save error) due to Node.js/V8 SIGILL (MPX) on cluster-docs v9.3.4_amd64

[wqzai]

v9.3.4_amd64 — files cannot be saved (always fails)

ghcr.io/euro-office/cluster-docs:v9.3.4 (amd64) fails to save files. Every save/force-save returns callback status code 7 ("error while force saving the document"). The editor loads fine; only saving is broken.

Cause: the image's embedded Node.js/V8 runtime crashes with Illegal instruction (core dumped) / Fatal error in v8::ToLocalChecked / SyntaxError: Invalid or unexpected token on hosts whose CPU reports mpx (Intel MPX, which is disabled via microcode on many systems). Since save/finalization runs through Node, the save aborts.

These crashes appear at every startup (Generating AllFonts.js / presentation themes / js caches) and during document processing.

Request: please provide a build of v9.3.4_amd64 (or a tag) that does not depend on MPX instructions, so it runs on hosts with MPX disabled.

 * Starting PostgreSQL 16 database server
   ...done.
Postgres schema already present, skipping.
Starting RabbitMQ Messaging Server rabbitmq-server
   ...done.
Starting redis-server: redis-server.
 * Starting nginx nginx
   ...done.
Generating AllFonts.js, please wait...Done

#
# Fatal error in v8::ToLocalChecked
# Empty MaybeLocal.
#

Illegal instruction (core dumped)
SyntaxError: Invalid or unexpected token
SyntaxError: Invalid or unexpected token
SyntaxError: Invalid or unexpected token
SyntaxError: Invalid or unexpected token
SyntaxError: Invalid or unexpected token
Generating presentation themes, please wait...could not use /var/www/euro-office/documentserver/sdkjs/slide/themes/src/01_blank.pptx: <result><error code="run" /></result>
Done

#
# Fatal error in v8::ToLocalChecked
# Empty MaybeLocal.
#

Illegal instruction (core dumped)
Generating js caches, please wait...Done
 * Reloading nginx configuration nginx
   ...done.
/usr/lib/python3/dist-packages/supervisor/options.py:474: UserWarning: Supervisord is running as root and it is searching for its configuration file in default locations (including its current working directory); you probably want to specify a "-c" argument specifying an absolute path to a configuration file for improved security.
  self.warnings.warn(
2026-08-26 07:54:27,666 INFO Included extra file "/etc/supervisor/conf.d/ds-adminpanel.conf" during parsing
2026-08-26 07:54:27,666 INFO Included extra file "/etc/supervisor/conf.d/ds-converter.conf" during parsing
2026-08-26 07:54:27,666 INFO Included extra file "/etc/supervisor/conf.d/ds-docservice.conf" during parsing
2026-08-26 07:54:27,666 INFO Included extra file "/etc/supervisor/conf.d/ds-example.conf" during parsing
2026-08-26 07:54:27,666 INFO Included extra file "/etc/supervisor/conf.d/ds-metrics.conf" during parsing
2026-08-26 07:54:27,666 INFO Included extra file "/etc/supervisor/conf.d/supervisord.conf" during parsing
2026-08-26 07:54:27,666 INFO Set uid to user 0 succeeded
2026-08-26 07:54:27,670 INFO RPC interface 'supervisor' initialized
2026-08-26 07:54:27,670 CRIT Server 'unix_http_server' running without any HTTP authentication checking
2026-08-26 07:54:27,670 INFO supervisord started with pid 1
2026-08-26 07:54:28,677 INFO spawned: 'converter' with pid 700
2026-08-26 07:54:28,680 INFO spawned: 'docservice' with pid 701
2026-08-26 07:54:30,306 INFO success: converter entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2026-08-26 07:54:30,306 INFO success: docservice entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2026-08-26 07:55:14,747 INFO reaped unknown pid 1132 (exit status 0)
2026-08-26 07:55:14,748 INFO reaped unknown pid 1133 (exit status 0)
2026-08-26 07:55:14,748 INFO reaped unknown pid 1231 (terminated by SIGUSR1)

[github-actions]

@rikled @j-base64 Please triage this community-created issue within 48 hours.

[wqzai]

Confirmed: downgrading from 9.3.4_amd64 to 9.3.3_amd64 resolves the issue entirely.

[Stoner60]

Same for me on raspberry 5 on arm64
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"OCA\\Eurooffice\\DocumentService", "type": "->", "args": [ "http://nextcloud/apps/eurooffice/download?doc=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJhY3Rpb24iOiJkb3dubG9hZCIsImZpbGVJZCI6MTEwMDUsInVzZXJJZCI6IkNocmlzdGlhbiJ9.4HXBLNV3JvsN_KuCwcNuwoURp29kx8s-uz1s7_hZQyc", "xlsx", "jpeg", "thumb_1646440265" ] }, { "file": "/var/www/html/lib/private/Preview/GeneratorHelper.php", "line": 25, "function": "getThumbnail", "class": "OCA\\Eurooffice\\Preview", "type": "->", "args": [ { "__class__": "OC\\Files\\Node\\File" }, 1024, 1024 ] }, { "file": "/var/www/html/lib/private/Preview/Generator.php", "line": 382, "function": "getThumbnail", "class": "OC\\Preview\\GeneratorHelper", "type": "->", "args": [ { "__class__": "OCA\\Eurooffice\\Preview" }, { "__class__": "OC\\Files\\Node\\File" }, 1024, 1024 ] }, { "file": "/var/www/html/lib/private/Preview/Generator.php", "line": 336, "function": "generateProviderPreview", "class": "OC\\Preview\\Generator", "type": "->", "args": [ { "__class__": "OC\\Files\\Node\\File" }, 1024, 1024, false, true, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", null ] }, { "file": "/var/www/html/lib/private/Preview/Generator.php", "line": 127, "function": "getMaxPreview", "class": "OC\\Preview\\Generator", "type": "->", "args": [ [], { "__class__": "OC\\Files\\Node\\File" }, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", null ] }, { "file": "/var/www/html/lib/private/Preview/Generator.php", "line": 95, "function": "generatePreviews", "class": "OC\\Preview\\Generator", "type": "->", "args": [ { "__class__": "OC\\Files\\Node\\File" }, [ { "width": 32, "height": 32, "crop": true, "mode": "fill" } ], "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", true ] }, { "file": "/var/www/html/lib/private/PreviewManager.php", "line": 183, "function": "getPreview", "class": "OC\\Preview\\Generator", "type": "->", "args": [ { "__class__": "OC\\Files\\Node\\File" }, 32, 32, true, "fill", null, true ] }, { "file": "/var/www/html/core/Controller/PreviewController.php", "line": 166, "function": "getPreview", "class": "OC\\PreviewManager", "type": "->", "args": [ { "__class__": "OC\\Files\\Node\\File" }, 32, 32, true, "fill" ] }, { "file": "/var/www/html/core/Controller/PreviewController.php", "line": 128, "function": "fetchPreview", "class": "OC\\Core\\Controller\\PreviewController", "type": "->", "args": [ { "__class__": "OC\\Files\\Node\\File" }, 32, 32, false, true, "fill", true ] }, { "file": "/var/www/html/lib/private/AppFramework/Http/Dispatcher.php", "line": 165, "function": "getPreviewByFileId", "class": "OC\\Core\\Controller\\PreviewController", "type": "->", "args": [ 11005, 32, 32, false, true, "fill", true ] }, { "file": "/var/www/html/lib/private/AppFramework/Http/Dispatcher.php", "line": 78, "function": "executeController", "class": "OC\\AppFramework\\Http\\Dispatcher", "type": "->", "args": [ { "__class__": "OC\\Core\\Controller\\PreviewController" }, "getPreviewByFileId" ] }, { "file": "/var/www/html/lib/private/AppFramework/App.php", "line": 137, "function": "dispatch", "class": "OC\\AppFramework\\Http\\Dispatcher", "type": "->", "args": [ { "__class__": "OC\\Core\\Controller\\PreviewController" }, "getPreviewByFileId" ] }, { "file": "/var/www/html/lib/private/Route/Router.php", "line": 324, "function": "main", "class": "OC\\AppFramework\\App", "type": "::", "args": [ "OC\\Core\\Controller\\PreviewController", "getPreviewByFileId", { "__class__": "OC\\AppFramework\\DependencyInjection\\DIContainer" }, { "_route": "core.preview.getpreviewbyfileid" } ] }, { "file": "/var/www/html/lib/base.php", "line": 1172, "function": "match", "class": "OC\\Route\\Router", "type": "->", "args": [ "/core/preview" ] }, { "file": "/var/www/html/index.php", "line": 25, "function": "handleRequest", "class": "OC", "type": "::", "args": [] } ], "File": "/var/www/html/custom_apps/eurooffice/lib/DocumentService.php", "Line": 241, "message": "getConvertedUri: from xlsx to jpeg", "exception": "{\"class\":\"Exception\",\"message\":\"Im Dokumentenservice ist ein Fehler aufgetreten: Conversion error\",\"code\":0,\"file\":\"/var/www/html/custom_apps/eurooffice/lib/DocumentService.php:241\",\"trace\":\"#0 /var/www/html/custom_apps/eurooffice/lib/DocumentService.php(88): OCA\\Eurooffice\\DocumentService->processConvServResponceError(-3)\\n#1 /var/www/html/custom_apps/eurooffice/lib/Preview.php(156): OCA\\Eurooffice\\DocumentService->getConvertedUri('http://nextclou...', 'xlsx', 'jpeg', 'thumb_164644026...')\\n#2 /var/www/html/lib/private/Preview/GeneratorHelper.php(25): OCA\\Eurooffice\\Preview->getThumbnail(Object(OC\\Files\\Node\\File), 1024, 1024)\\n#3 /var/www/html/lib/private/Preview/Generator.php(382): OC\\Preview\\GeneratorHelper->getThumbnail(Object(OCA\\Eurooffice\\Preview), Object(OC\\Files\\Node\\File), 1024, 1024)\\n#4 /var/www/html/lib/private/Preview/Generator.php(336): OC\\Preview\\Generator->generateProviderPreview(Object(OC\\Files\\Node\\File), 1024, 1024, false, true, 'application/vnd...', NULL)\\n#5 /var/www/html/lib/private/Preview/Generator.php(127): OC\\Preview\\Generator->getMaxPreview(Array, Object(OC\\Files\\Node\\File), 'application/vnd...', NULL)\\n#6 /var/www/html/lib/private/Preview/Generator.php(95): OC\\Preview\\Generator->generatePreviews(Object(OC\\Files\\Node\\File), Array, 'application/vnd...', true)\\n#7 /var/www/html/lib/private/PreviewManager.php(183): OC\\Preview\\Generator->getPreview(Object(OC\\Files\\Node\\File), 32, 32, true, 'fill', NULL, true)\\n#8 /var/www/html/core/Controller/PreviewController.php(166): OC\\PreviewManager->getPreview(Object(OC\\Files\\Node\\File), 32, 32, true, 'fill')\\n#9 /var/www/html/core/Controller/PreviewController.php(128): OC\\Core\\Controller\\PreviewController->fetchPreview(Object(OC\\Files\\Node\\File), 32, 32, false, true, 'fill', true)\\n#10 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(165): OC\\Core\\Controller\\PreviewController->getPreviewByFileId(11005, 32, 32, false, true, 'fill', true)\\n#11 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(78): OC\\AppFramework\\Http\\Dispatcher->executeController(Object(OC\\Core\\Controller\\PreviewController), 'getPreviewByFil...')\\n#12 /var/www/html/lib/private/AppFramework/App.php(137): OC\\AppFramework\\Http\\Dispatcher->dispatch(Object(OC\\Core\\Controller\\PreviewController), 'getPreviewByFil...')\\n#13 /var/www/html/lib/private/Route/Router.php(324): OC\\AppFramework\\App::main('OC\\\\Core\\\\Control...', 'getPreviewByFil...', Object(OC\\AppFramework\\DependencyInjection\\DIContainer), Array)\\n#14 /var/www/html/lib/base.php(1172): OC\\Route\\Router->match('/core/preview')\\n#15 /var/www/html/index.php(25): OC::handleRequest()\\n#16 {main}\"}", "CustomMessage": "getConvertedUri: from xlsx to jpeg" } }

[Glujaz]

Downgrading solved the issue for me as well.
I also had some alerts during the update with the last package.

[Dennis1993]

Same here, version is unusable.

[renatoyamane]

@chrip, release 9.3.4 is broken and needs to be rolled back to 9.3.3.

Bugs of this nature should not be present in stable releases.

This issue should have been caught if Euro-Office had followed its own release process (releasing an RC version first, followed by the final build), as informed on the Release Process #145

[jondycz]

@chrip, release 9.3.4 is broken and needs to be rolled back to 9.3.3.

Bugs of this nature should not be present in stable releases.

This issue should have been caught if Euro-Office had followed its own release process (releasing an RC version first, followed by the final build), as informed on the Release Process #145

I am slowly losing faith in this project. Development is slow due to lack of maintainers, pull requests take forever to get merged, issues keep piling up. This shouldn't be the case considering all the marketing and support from nextcloud and other eu companies.

Why pour time into integrating with euro-office, when only-office is stable, doesn't break, has active development and new features added every month.

Every EO release either breaks something or barely fixed anything. Plugins still do not work due to regressions in rebranding. I'm starting to feel like all that was ever achieved was renaming the references from only office fo euro office at a cost of breaking majority of the features and not much else.

Please sell me a pitch on why EO is better than OO

[chrip]

@renatoyamane @jondycz
I understand your criticism. EO needs to move forward faster and has a lot of loose ends. Our team is working hard to get EO on track. We're currently hiring new developers to improve the situation in the long term. Until then, I can only hope that you'll stick with the project.
EO aims to be an open project, and every contribution is warmly welcome. This applies not only to code, but also to feedback, bug reports, PRs, and reviews. PRs that have already been reviewed by someone else can be merged much more quickly. So this is an open invitation to everyone reading this.