The plugin does not have a valid header
]]>trying to install this via the plugin installer but can’t activate as it is returning an error : ‘The plugin does not have a valid header’
WP version : 5.9.3
Regards
D
When i install the plugin try to activate it. WordPress through an error.
“Plugin don’t have valid headers”
I want to use this plugin in 3 websites but it gives error during activation.
]]>Awesome plugin! Pretty much all the functionalities are working great. But only when I add a payment (PayPal Sandbox, configured properly with API key/signature) and the invoice is sent via email and the PayPal button is clicked, it goes to the following URL:
https://wpfree.devhtmlfive.com/payment/ (which is our test site and the payment page is created by the plugin) and every time we get the following error:
Error Code: 10002
Security header is not valid
I deleted it and tried again. Same result. Next, I used the link on your page below the section that has a link to the plugin page. It downloaded a zip file and I was able to install and activate that one. It seems the one from the WP plugin page is bad but the one from your website page is good. Is it the latest version?
]]>when I try to activate the plugin on my network I get this error:
The plugin does not have a valid header.
Does anyone know how to solve this?
Thanks a lot,
Simone
]]>After I clicked on my plugins list in my wordpress dashboard today, suddenly a list with basically all of my currently activated plugins came up and said that they got de-installed due to an invalid header.
Interesting thing is: I did not do anything. This was the first visit to my dashboard in days and the first thing I did was clicking on my plugins.
I cannot re-install and activate them. They instantly get de-installed again due to the same mistake.
And: I currently have no access to my ftp as my host is changing something with their servers, so I can’t check it. Could the problem be the server? I already asked them but they are not sure and have to fix other things first.
Plugins that got de-installed are the YOAST SEO, the official MailChimp, WP Rocket and other very popular plugins. I can send you a screenshot of the list, if it helps.
Plugins still working are shariff wrapper and google analytics dashboard. I just can’t see any coherence.
I am grateful for any hint.
Cheers,
Laurel