When I save a Ressource, sometimes I have a endless Saving box…
And I have this error in /core/cache/logs/error.log:
[2020-02-21 11:49:07] (ERROR in xPDO::getService @ /home/www/core-271/xpdo/xpdo.class.php : 1234) modRestClient::__construct is deprecated since version 2.3.0. Use the modRest classes instead.
[2020-02-21 11:49:07] (ERROR in modRestCurlClient::__construct @ /home/www/core-271/model/modx/rest/modrestcurlclient.class.php : 26) modRestClient::__construct is deprecated since version 2.3.0. Use the modRest classes instead.
If your version of MODX is not up to date, update it.
Look in Package Manager to see if you have any extras with available updates.
If that doesn’t work you could try turning off the log_deprecated System Setting, though it might be worth trying to find out which of your extras is making that modRestClient static constructor call.