It is strongly recommended that the moodledata folder (or whatever you call it) should NOT be placed inside the moodle folder but rather outside your public web space. Please try moving the current folder outside your www or 'public_html" folder and modifying your configuration to reflect the change.
Another problem might be the space if you indeed called your folder 'my data'. Try renaming it to 'my_data' instead.
Hotpot (plugin)
Problem after Installing HP module
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