Step upgrade j3 to j4

$2y$10$ygBSBRhrai7Efrrkw3cMoehDuElSyzz9NENMj8w6kHJbUZ.q5dunG
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Upgrade 3.10.12
Upgrade next
mod_unread

SELECT * FROM `jos_extensions` where name='PKG_JOOMLA' or name='atomic' or name='SimplePie' or name='beez5' or name='beez_20' or name='beez5' or name='beez_20' or extension_id='10316' or extension_id='10399'  or extension_id='10400'  or extension_id='10422'  or extension_id='10438';
Upgrade j4
Installs extensions
Import
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DOCMAN:
    j3 upgrade
    Export
    Import
    Expire
    UPDATE  jos_docman_documents SET publish_on = NULL,unpublish_on = NULL,locked_on = NULL
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JCALL:
SELECT * FROM `jos_categories` where extension='com_jcalpro'
Categorie rebuild
J3 db export all table 'insert only'
J4 db import
Location : AIzaSyBuKV59lhdpaPMM4AHGSXlyTJrBOCib3K4


ALTER TABLE `jos_jcalpro_events`  DROP `day`,  DROP `month`,  DROP `year`,  DROP `hour`,  DROP `minute`,  DROP `registration_start_day`,  DROP `registration_start_month`,  DROP `registration_start_year`,  DROP `registration_start_hour`,  DROP `registration_start_minute`,  DROP `registration_end_day`,  DROP `registration_end_month`,  DROP `registration_end_year`,  DROP `registration_end_hour`,  DROP `registration_end_minute`,  DROP `end_month`,  DROP `end_year`,  DROP `end_day`,  DROP `end_hour`,  DROP `end_minute`;
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Visform:
Fields
Form
copy from j3 fix miss icon: media\jui
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weblinks
Install extension by web
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Move site
Create j3
Move j3
J4 move to public_html
J3 move to root (empty path)
Config 90, log path, search index, account

PHP version 7.x error CMSplugin::loadLanguage

Detail:PHP verison 7x., joomla error
Relate plugin/system/jsecure

Solution: change or remove plugin

joomla com_newsfeed load blogspot url change image size

Description: load feed from blogspot.com image reduce 300px, 400px. Need upto 1024px

File edit: com_newsfeeds\views\newsfeed\tmpl\default.php

Line 133:

<?php echo str_replace('&apos;', "'", $text); ?>

Change to:

<?php 

$text = str_replace('/s320/', '/s1024/', $text);

$text = str_replace('/s400/', '/s1024/', $text);

echo str_replace('&apos;', "'", $text); ?>

Image result

Joomla 3.x admin json error SOLVED

Description: Joomla backend save article, module, or config view issue "0 - Error decoding JSON data"
The reason: param at database {} break quote.
This many reason from many table. So need view error.

Step #1:
Here https://forum.joomla.org/viewtopic.php?f=706&t=937036 on Oct 19 the user ibrentlam offered the following solution:

The error is pulled in the file:
/libraries/vendor/joomla/registry/src/Format/Json.php`
line 72
I changed it to:
throw new \RuntimeException(sprintf('Error decoding JSON data: %s the bad data is: %s', json_last_error_msg(), $data));
so I could actually see the data.

Step #2: reload joomla admin BackEnd, view detail data error view
Step #3: backup database before edit, find data to know: table name, row id.
Step #4: Focus at column PARAM, check {} quote