prestashop 1.7.1.1 warning: Ziparchive::extract to

[hoirubie]

When i try to install prestashop 1.7.1.1 on my synology diskstation in the /var/services/web/prestashop folder and try to launch the installer, the installer launches gets stuck at 0% and gives the error message: 

 

Warning: ZipArchive::extractTo(/volume1/web/prestashop//.eslintrc.json): failed to open stream: Permission denied in /volume1/web/prestashop/index.php on line 39 {"error":true,"message":"An error occured during the extraction","file":".eslintrc.json","status":"No error","numFiles":17509,"lastId":500,"files":[".eslintrc.json","admin\/","admin\/.htaccess","admin\/ajax-..... (going on for a long time naming all the file names)

 

It seems that the zip archive has no permission to write or something, can somebody help me please?

 

kind regards,

 

Ruben