Greetings! I’m tracking pitfalls in my long-delayed update of a 4.3.4 website, and had had some success last season (after quashing some plug-in related bugs); now, with a fresh copy of the ‘site, I’m seeing the same error as was reported in this 2 year-old thread:

https://expressionengine.com/forums/topic/252899/5.4.0-update-fails

In that thread and some others that search yielded, the solution wasn’t explained, or the user had better luck on their next attempt.

From the control panel, the auto-update trips on the download, complaining of the unexpected content type: text/html; charset=UTF-8

The PHP version is as low as my test environment will allow, 7.4 (which causes the 4.3.4 CP to throw some ‘deprecated’ messages).

My attempt last season was instructive and ultimately I got as far as 6.3x; but using a mostly exactly similar copy I’m not having such luck. Thoughts?

Here’s a stack trace, in case that might be a clue:

0 ee/EllisLab/ExpressionEngine/Service/Updater/Downloader/Downloader.php(71): EllisLab\ExpressionEngine\Service\Updater\Downloader\Downloader->validateResponse(Object(EllisLab\ExpressionEngine\Library\Curl\PostRequest), '')

1 ee/EllisLab/ExpressionEngine/Service/Updater/Runner.php(61): EllisLab\ExpressionEngine\Service\Updater\Downloader\Downloader->downloadPackage('https://update….')

2 [internal function]: EllisLab\ExpressionEngine\Service\Updater\Runner->download()

3 ee/EllisLab/ExpressionEngine/Service/Updater/SteppableTrait.php(96): call_user_func_array(Array, Array)

4 ee/EllisLab/ExpressionEngine/Service/Updater/Runner.php(94): EllisLab\ExpressionEngine\Service\Updater\Runner->runStepParent('download')

5 ee/EllisLab/ExpressionEngine/Controller/Updater/Updater.php(106): EllisLab\ExpressionEngine\Service\Updater\Runner->runStep('download')

6 [internal function]: EllisLab\ExpressionEngine\Controller\Updater\Updater->run()

7 ee/EllisLab/ExpressionEngine/Core/Core.php(240): call_user_func_array(Array, Array)

8 ee/EllisLab/ExpressionEngine/Core/Core.php(109): EllisLab\ExpressionEngine\Core\Core->runController(Array)

9 ee/EllisLab/ExpressionEngine/Boot/boot.php(146): EllisLab\ExpressionEngine\Core\Core->run(Object(EllisLab\ExpressionEngine\Core\Request))

10 admin.php(147): require_once('…')

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