server problems 403, file not found

[Ampersand]

well, not sure now when I can edit old template files, and all files even old transferred without quotation marks. Example from 3.1.2 that also behaves as above:
browser URL:mysite.com/d/tourist/admin/changedata.php
browser window: Forbidden

You don't have permission to access /d/tourist/admin/changedata.php on this server.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.

Error log from server

Code:

[Sat Jan 23 21:31:59 2016] [error] [client 188.146.4.234] File does not exist: /public_html/403.shtml, referer: http://mysite.com/d/tourist/admin/edit.php?id=arrival_de&upd=edit-success&type=edit
[Sat Jan 23 21:30:48 2016] [error] [client 188.146.4.234] File does not exist: /public_html/403.shtml, referer: http://mysite.com/d/tourist/admin/edit.php?id=kontakt
[Sat Jan 23 21:30:00 2016] [error] [client 188.146.4.234] File does not exist: /public_html/403.shtml, referer: http://mysite.coml/d/tourist/admin/edit.php?id=alibi&upd=edit-success&type=edit

page 'alibi' doesn't contain quotation marks so it saved well whereas 'kontakt' contains quots