Hello Geoff,
I have spoken with my host providers and they are studing this issue. The strange think, is that this warning is showing in frontend of the website. You can look it here.
I have created a tmp folder in hosting root, with 777 permissions too, I issue persist.
In Events->Help , in Event log section, I have selected “Disabled” option in Logging level select field.
I have checked again that my wp-config.php file has wp-debug option in false.
I understand that is not error, this is a warning, but it appears in frontend.
Can you show me another solution to inspect, please? I need to fix this issue
Thanks Geoff and sorry for my english,
Best