is_file(): open_basedir restriction in effect. File(/vendor/horizon/nonExistentFile) is not within the allowed path(s): (/var/www:/var/lib/php/session:/tmp:/usr/bin)

is_file(): open_basedir restriction in effect. File(/vendor/horizon/nonExistentFile) is not within the allowed path(s): (/var/www:/var/lib/php/session:/tmp:/usr/bin) #38