Your question has been asked and answered multiple times in this forum. Using the the search function could be so easy and fast 
Delete that file and make sure that the Nextcloud root directory is not the home directory of the web servers user.
Your question has been asked and answered multiple times in this forum. Using the the search function could be so easy and fast
Delete that file and make sure that the Nextcloud root directory is not the home directory of the web servers user.