Error message above Calendar

Hello!

So, my calendar is actually shown just perfectly – apart from an error message that is displayed just above it:

Warning: file_exists() [function.file-exists]: open_basedir restriction in effect. File(/tmp/Google_Client/b9/b9dde466eadb137c7bd82071a8db89f3) is not within the allowed path(s): (/users/sdcv/www:/users/_temp/sdcv) in /users/sdcv/www/wordpress/wp-content/plugins/google-calendar-events/vendor/google/apiclient/src/Google/Cache/File.php on line 52

Could you tell me how to fix that? I know it must have sth to do with the temp directory, but I’m too new to the whole WP/php/FTP thing to solve it without any help..

Thanks in advance!

https://ww.wp.xz.cn/plugins/google-calendar-events/