Empty maps if more than one map in aricle

Problem with maps and articles created after July 2018:
- if article contains only one map: is displayed as expected
- if article contains more than one map:: empty map spaces, but pop-up of large map workes for first two maps!

Firefox console shows these messages:

JQMIGRATE: Migrate is installed, version 1.4.1 jquery-migrate.min.js:2:542
SyntaxError: unexpected token: identifier[Weitere Informationen] zh-travel-map-problem:498:72

See
joomlatest31.familie-abderhalden.ch/inde...p-problem-single-map
and
joomlatest31.familie-abderhalden.ch/inde...h-travel-map-problem

Articles with more than one map created in July 2018 still work as expected

Hi.
The second link - there is an error on page for placemark with title
"2018 GR Melano - Porto Sant'Elpidio" and it breaks all output.
it contains ' symbol, but I can't understand why it is not converted.
I call htmlspecialchars php function to convert quotes.

PS I checked your line in my test site - all works correctly.

What version of php do you have on your site?

Thank you for looking at my problem.

PHP Version: 5.6.19
Joomla! Version: Joomla! 3.9.0 Stable [ Amani ] 30-October-2018 14:00 GMT
Joomla! Platform Version: Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013 00:00 GMT
User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0

I think you have some troubles in php settings
For example this article
www.saotn.org/php-56-default_charset-cha...y-break-html-output/
I think problem in charset, because call function passes data without changes

I use php 7.2 (due to 5.6 is end of support php.net/supported-versions.php ), but before I use 5.6 and all was OK, because all my developments was started on 5.6

If you can - check php settings. Or, if it is development site - try to move to other php version

have now switched PHP to Version 7.1.1
Sorry, problem still exists..
...

What MySQL encoding (collation...)