Nextcloud App refuse to load after upgrade of PHP version to 8.2

[baumkirchner]

Describe the bug
After upgrading PHP version to 8.2 Snappymail refuses to load, showing this message:

An error occurred.
Please refresh the page and try again.TypeError: Decoding failed.

Refreshing the page does not change anything.
Neather the Nextcloud log nor the log of PHP 8.2 are containing any entries about this issue.

To Reproduce

1. Upgrade PHP version to 8.2 resp. switch Nextcloud's domain to use PHP 8.2
2. Log into Nextcloud
3. Try to launch Snappymail or the Snappymail admin panel
4. See error
5. Switch Nextcloud's domain back to PHP 8.0
6. See Snappymail app loading as usual

Expected behavior
The Snappymail app resp. its admin panel should load as usual

Please complete the following information:

• Browser: Firefox 114, Chromium 112
• IMAP daemon: external IMAP server
• PHP version: 8.2.10
• Mode: nextcloud
• SnappyMail Version: 2.28.4
• Nextcloud Version: 27.0.2
• Webserver: nginx

Debug/logging information
Unfortunately neather the Nextcloud log nor the log of PHP 8.2 are containing any entries about this issue.
Unfortunately in the Nextcloud app of Snappymail logging can not be enabled as described here

[MI-KY]

Unfortunately in the Nextcloud app of Snappymail logging can not be enabled as described here

Debugging the Nextcloud Integration of SnappyMail should work as described here: https://github.com/the-djmaze/snappymail/tree/master/integrations/nextcloud/snappymail#how-to-activate-snappymail-logging-and-then-find-logs . Or did you tried this and it does not work anymore like described?

[baumkirchner]

Thank you @MI-KY for the hint resp. debugging of the nextcloud app.
Switching debugging on and the log level to 7 outputs the following:

[2023-09-08 19:13:17.043][0c044175] [INFO]: [SM:2.28.4][IP:149.34.244.131][PID:85466][nginx/1.24.0][fpm-fcgi][Streams:tcp,udp,unix,udg,ssl,tls,tlsv1.0,tlsv1.1,tlsv1.2,tlsv1.3][GET https://xxxxxx.yyyyyyy.zz/apps/snappymail/]

[2023-09-08 19:13:18.625][0c044175] [INFO]: Memory peak usage: 12MB

[2023-09-08 19:13:18.625][0c044175] [INFO]: Time delta: 2.9731919765472]

[2023-09-08 19:13:19.260][d0ba6ba1] [INFO]: [SM:2.28.4][IP:149.34.244.131][PID:85940][nginx/1.24.0][fpm-fcgi][Streams:tcp,udp,unix,udg,ssl,tls,tlsv1.0,tlsv1.1,tlsv1.2,tlsv1.3][GET https://xxxxxx.yyyyyyy.zz/apps/snappymail/?/AppData/0/2948471016930554/]

[2023-09-08 19:13:19.373][d0ba6ba1] PLUGIN[INFO]: Hook: filter.app-data

[2023-09-08 19:13:19.374][d0ba6ba1] APPDATA[INFO]: {"Auth":false,"title":"Snappymail","loadingDescription":"Snappymail","Plugins":[],"System":{"version":"2.28.4","token":"aighe8ji4reeR7ooshot1iev4aeloo1yie6Ro9ei","languages":["ar-SA","bg-BG","cs-CZ","da-DK","de-DE","el-GR","en","en-GB","eo","es-ES","et-EE","eu","fa-IR","fi-FI","fr-FR","hu-HU","id-ID","is-IS","it-IT","ja-JP","ko-KR","lt-LT","lv-LV","nb-NO","nl-NL","pl-PL","pt","pt-BR","pt-PT","ro-RO","ru-RU","sk-SK","sl-SI","sv-SE","tr-TR","uk-UA","vi-VN","zh-CN","zh-TW"],"webPath":"\/apps\/snappymail\/app\/","webVersionPath":"\/apps\/snappymail\/app\/snappymail\/v\/2.28.4\/"},"allowLanguagesOnLogin":true,"DevEmail":"xxxx@yyyyyyy.zz","DevPassword":"","signMe":"DefaultOff","Theme":"Nextcloud@custom","language":"de-DE","userLanguage":"de-DE","PluginsLink":"Plugins\/0\/User\/993dc0f52cd32f10162cda34aed726f3\/","StaticLibsJs":"\/apps\/snappymail\/app\/snappymail\/v\/2.28.4\/static\/js\/min\/libs.min.js","Nextcloud":{"UID":"xxxx@yyyyyyy.zz","WebDAV":"https:\/\/xxxxxx.yyyyyyy.zz\/remote.php\/dav","CalDAV":false}}

[2023-09-08 19:13:19.867][d0ba6ba1] [INFO]: Memory peak usage: 12MB

[2023-09-08 19:13:19.867][d0ba6ba1] [INFO]: Time delta: 0.81934404373169

As far as i understand this output nothing gives a hint to the described PHP8.2 issue.

[cm-schl]

Hi,
had some similar issue where nothing was inside the logs...
Have you looked inside the browser console?

[baumkirchner]

Hi, had some similar issue where nothing was inside the logs... Have you looked inside the browser console?

This issue is about PHP version, especially PHP8.2, not about logging.
Please find information about logging here

[cm-schl]

I understand - but as you can't see anything in the logs my suggestion was to have a look into the browser console where maybe something is reported.

Anyway, to give you some more feedback I've set up a new Nextcloud instance with v27.0.2 with PHP v8.2.10 and installed a fresh SnappyMail (v2.28.4) - I have no problems accessing and reading my mails. So maybe the problem arises from something else...

[the-djmaze]

So maybe the problem arises from something else...

Correct. Mostly it is double encoded (snappymail gzip + php/apache/nginx forced gzip, resulting in 2 times gzipped data).

Other times the servers has misconfiguration to output additional data before/after the content which results in partial encoded data so that decoding fails.

The browser console reveals this "PHP" issue.