appserver Error manifest for devwithlando/pantheon-appserver:7.1-5 not found: manifest unknown: manifest unknown

[scottsawyer]

I attempted to start up an older lando project, one that I've used in the last 2 months.

Today it failed to start with the error:
appserver Error manifest for devwithlando/pantheon-appserver:7.1-5 not found: manifest unknown: manifest unknown

I ran lando rebuild -y, failed at the same spot.

lando rebuild --debug

  lando ERROR Error
    at /snapshot/core/lib/shell.js:161:23
From previous event:
    at Shell.sh (/snapshot/core/lib/shell.js:150:6)
    at dc (/snapshot/core/utils/setup-engine.js:6:16)
    at compose (/snapshot/core/utils/setup-engine.js:26:35)
    at /snapshot/core/lib/router.js:40:35
    at /snapshot/core/lib/router.js:24:74
    at process.processImmediate (node:internal/timers:483:21)
From previous event:
    at retryEach (/snapshot/core/lib/router.js:24:42)
    at Object.build (/snapshot/core/lib/router.js:40:10)
    at /snapshot/core/lib/engine.js:78:57
    at /snapshot/core/lib/router.js:32:15
From previous event:
    at Object.eventWrapper (/snapshot/core/lib/router.js:32:4)
    at Engine.engineCmd (/snapshot/core/lib/engine.js:19:104)
    at Engine.build (/snapshot/core/lib/engine.js:78:17)
    at /snapshot/core/lib/app.js:416:29
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async Object.run (/snapshot/core/tasks/rebuild.js:43:11)  +971ms
  lando reporting error action to url=https://metrics.lando.dev, report=true +12ms
  lando reporting data command=lando rebuild, context=local, devMode=false, instance=b99bc0bac2f7d55c98692909a9d1356dba60273b, nodeVersion=v20.18.0, mode=cli, type=Linux, platform=linux, landoPlatform=linux, release=6.8.0-100-generic, arch=x64, isWsl=false, isWslInterop=false, product=lando, version=3.26.2, message=, stack=Error
    at /snapshot/core/lib/shell.js:161:23
From previous event:
    at Shell.sh (shell.js:150:6)
    at dc (setup-engine.js:6:16)
    at compose (setup-engine.js:26:35)
    at /snapshot/core/lib/router.js:40:35
    at /snapshot/core/lib/router.js:24:74
    at process.processImmediate (timers:483:21)
From previous event:
    at retryEach (router.js:24:42)
    at Object.build (router.js:40:10)
    at /snapshot/core/lib/engine.js:78:57
    at /snapshot/core/lib/router.js:32:15
From previous event:
    at Object.eventWrapper (router.js:32:4)
    at Engine.engineCmd (engine.js:19:104)
    at Engine.build (engine.js:78:17)
    at /snapshot/core/lib/app.js:416:29
    at process.processTicksAndRejections (task_queues:95:5)
    at async Object.run (rebuild.js:43:11), action=error, created=2026-03-23T17:27:54.200Z +1ms

I am stuck, not sure what to do, though it seems possibly related to lando/lando#1304

Please advise.

[scottsawyer]

FYI,

OS: Ubuntu 24.04
Lando: v3.26.2 (Pantheon recipe)

[AaronFeledy]

This is happening because php_version: 7.1 in your pantheon.yml (or pantheon.upstream.yml) results in the plugin trying to pull devwithlando/pantheon-appserver:7.1-5, which doesn't exist. Generation 5 images are only built for PHP 8.0+.

Fix: Update php_version in your pantheon.yml to a supported version — 8.0, 8.1, 8.2, 8.3, or 8.4.

We've also opened #348 to make the plugin handle this gracefully — it'll warn you and fall back to PHP 8.3 instead of failing with a cryptic Docker error.

[AaronFeledy]

Workaround — add this to your .lando.yml:

services:
  appserver:
    overrides:
      image: devwithlando/pantheon-appserver:7.1-4

Then lando rebuild -y. You should also update php_version in your pantheon.yml when you're ready to move off 7.1.

[scottsawyer]

Thank you @AaronFeledy I will test this asap. Yeah, PHP update is on the priority list.