wordpress update to 1.7 failed
I use wordpress 4.7.
I wanted to Install new types of contents but the installation failed saying I need a newer version of H5p. I updated the plug-in and now nothing works. First it said somthing about updating libraries, but now I can't find this message. I deactivated the plug-in, then tried to activate it, but it doesn't work saying
Fatal error: Declaration of H5PWordPress::fetchExternalData() must be compatible with that of H5PFrameworkInterface::fetchExternalData() in /home/b/bzubza/a-egorova.ru/public_html/wp-content/plugins/h5p/public/class-h5p-wordpress.php on line 3
I had over 300 exercises made with the help of h5p on my site now nothing works. Please help. What should I do? Can I download an older version anywhere so that everything started working again?