Pods custom taxonomy tied to several custom fields in a post doesnt save on first time.

[gnd]

Describe the bug
I have a WP instance modified with custom PODS fields and taxonomies. Both WP and PODS are udpated to the latest versions on a machine running PHP 7.3.11-1.
One custom taxonomy is called Osoby (People). Its only field is the field "web", but this is currently not used.

The taxonomy is linked to several custom fields in the WP post:

• artists
  Relationship [type: pick]
  › Osoby (osoby) (Taxonomy)

• curators
  Relationship [type: pick]
  › Osoby (osoby) (Taxonomy)

• performers
  Relationship [type: pick]
  › Osoby (osoby) (Taxonomy)

• sound
  Relationship [type: pick]
  › Osoby (osoby) (Taxonomy)

• edit
  Relationship [type: pick]
  › Osoby (osoby) (Taxonomy)

• camera
  Relationship [type: pick]
  › Osoby (osoby) (Taxonomy)

(and some more.)

One person can have several roles in a given post, so sometimes it happens that I put the same name into sound, edit and camera. When I do this and try to save the post, WP tells me (with the little popup-up in the lower left corner that the post is saved), however the Update button in the upper right corner still says "Updating..". The result is that only the first mention of the person is saved and the rest is not saved. When I check the console for errors, I get:

Failed to load resource: the server responded with a status of 500 (Internal Server Error)

post.php?post=210&action=edit:1 Uncaught (in promise)
Response
type: "basic"
url: "https://XXXX/wp-admin/post.php?post=210&action=edit&meta-box-loader=1&meta-box-loader-nonce=835264a07f&_locale=user"
redirected: false
status: 500
ok: false
statusText: "Internal Server Error"
headers: Headers {}
body: (...)
bodyUsed: false
proto: Response

When I edit the post afterwards, I can add the person into the rest of the roles and get no more errors. So it seems like PODS has some problems when adding the same new taxonomy term into several custom fields. Please let me know how I can help you debug this further. Thx !

To Reproduce
Steps to reproduce the behavior:

1. Create a new post with several custom fields tied to the 'people' taxonomy
2. Fill out a new name, the same into several of the fields tied to 'people'
3. Press publish

Expected behavior
I would expect all the custom fields with the person's name to be saved. However only the first mention is.

Pods Version

Version 2.7.16.2

WordPress Environment

wp-core

version: 5.3.2
site_language: en_US
user_language: en_US
timezone: +00:00
permalink: /%postname%/
https_status: true
user_registration: 0
default_comment_status: closed
multisite: false
user_count: 2
dotorg_communication: true

wp-active-theme

name: All You Can (allyoucan)
version: 1.0
author: gnd
author_website: https://github.com/gnd
parent_theme: none
theme_features: undefined

wp-plugins-active (2)

Media from FTP: version: 11.04, author: Katsushi Kawamori
Pods - Custom Content Types and Fields: version: 2.7.16.2, author: Pods Framework Team

wp-media

image_editor: WP_Image_Editor_GD
imagick_module_version: Not available
imagemagick_version: Not available
gd_version: 2.2.5
ghostscript_version: 9.27

wp-server

server_architecture: Linux 4.19.0-5-amd64 x86_64
httpd_software: Apache/2.4.38 (Debian)
php_version: 7.3.11-1~deb10u1 64bit
php_sapi: apache2handler
max_input_variables: 1000
time_limit: 30
memory_limit: 256M
max_input_time: 60
upload_max_size: 512M
php_post_max_size: 513M
curl_version: 7.64.0 OpenSSL/1.1.1d
suhosin: false
imagick_availability: false
htaccess_extra_rules: true

wp-database

extension: mysqli
server_version: 10.3.18-MariaDB-0+deb10u1
client_version: mysqlnd 5.0.12-dev - 20150407 - $Id: 7cc7cc96e675f6d72e5cf0f267f48e167c2abb23 $

wp-constants

WP_HOME: undefined
WP_SITEURL: undefined
WP_CONTENT_DIR: XXX/wp-content
WP_PLUGIN_DIR: XXX/wp-content/plugins
WP_MAX_MEMORY_LIMIT: 256M
WP_DEBUG: false
WP_DEBUG_DISPLAY: true
WP_DEBUG_LOG: false
SCRIPT_DEBUG: false
WP_CACHE: false
CONCATENATE_SCRIPTS: undefined
COMPRESS_SCRIPTS: undefined
COMPRESS_CSS: undefined
WP_LOCAL_DEV: undefined
DB_CHARSET: utf8mb4
DB_COLLATE: undefined

wp-filesystem

wordpress: writable
wp-content: writable
uploads: writable
plugins: writable
themes: writable

pods

pods-server-software: Apache/2.4.38 (Debian)
pods-user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/7046A194A
pods-session-save-path: /var/lib/php/sessions
pods-session-save-path-exists: No
pods-session-save-path-writable: No
pods-session-max-lifetime: 1440
pods-opcode-cache-apc: No
pods-opcode-cache-memcached: No
pods-opcode-cache-opcache: Yes
pods-opcode-cache-redis: No
pods-object-cache-apc: No
pods-object-cache-apcu: No
pods-object-cache-memcache: No
pods-object-cache-memcached: No
pods-object-cache-redis: No
pods-memory-current-usage: 27.768M
pods-memory-current-usage-real: 30.000M
pods-network-wide: No
pods-install-location: XXX/wp-content/plugins/pods/
pods-developer: No
pods-tableless-mode: No
pods-light-mode: No
pods-strict: No
pods-allow-deprecated: Yes
pods-api-cache: Yes
pods-shortcode-allow-evaluate-tags: No

Pods Package Export (helpful!)

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Additional context
none

Possible Workaround
When i edit the post afterwards i can add the person into the rest of the roles and get no more errors. So it seems like PODS has some problems when adding the same new taxonomy term into several custom fields.

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[JoryHogeveen]

Hello @gnd

Please enable debug and let us know what the internal error is: https://wordpress.org/support/article/debugging-in-wordpress/

I'd also like to comment on your setup.
Taxonomies are a WordPress core feature. You don't need a custom field for this. Just assign the taxonomy to the related posts in the "Advanced Options" tab.

Cheers, Jory

[gnd]

Hi @JoryHogeveen,

i have enabled debug in wp-config.php as well as logging into a error log, however nothing is shown either on the screen, or in the logfile. I'm sure its not a permissions issue with the file.

As i described above, only the first occurrence is saved, the others are not, and in the web browser's console i again see the same errors.

As for the Taxonomy - it is connected to several fields of the post (this is also described above) and i dont see how attaching that to the post type in Advanced options would help me..