1

Having updated 2 sites to Joomla 3.7.0 I cannot save any articles, the error message is Error decoding JSON data: Syntax error

Template is JSN Epic Pro

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This error is probably caused by the improved JSON validation introduced in Joomla 3.6.3.

Sometimes this only affects a few of the modules and can be fixed by running a database query like this or similar (run a backup first):

update xxxx_modules set params="" WHERE params = "{\"\"}";

On some sites, a bit more work is required and the easiest fix is running the script by Rob Went which can be found at: https://github.com/robwent/joomla-json-db-check

It is highly advisable to run a backup before running the script but this worked for me on at least one website.

  • 2
    That Rob Went script fixed a few of my sites in the past. Highly recommend. – YellowWebMonkey May 3 '17 at 1:48

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