supplementing @falsetru's answer : run id in the terminal to get your user_id and group_id
Go the directory/partition where you are facing the challenge. Open terminal, type id then press enter. This will show you your user_id and group_id
then type
chown -R user-id:group-id .
Replace user-id and group-id
. at the end indicates current partition / repository
// chown -R 1001:1001 . (that was my case)