Bugs in content types

Hi,

I am using the latest version of WordPress and H5P right now, but when I try to upload any image as a content in H5P, I receive the following error message: "File is not an image". I have tried it in different browsers, in incognito etc. with different type of pictures but the message is the same.

How can I solve this, could you help me?

Thank you, Péter

1. H5P Hub is enabled. 'Add new' content type clicked on. 'Get' clicked on for 'Multiple Choice' - 'Install' clicked on - Message 'Multiple Choice successfully installed! Added 13 new H5P libraries.' shown - 'Use' clicked on --> the page is then stuck on 'loading, please wait'.

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