Solution to svn configuration error in linux

This error occurs when the client accesses the subversion repository:

svnserve.conf:12: Option expected

Why this error occurs? It is because when subversion reads the configuration file svnserve.conf, it cannot recognize the leading spaces. Configuration file, such as
### This file controls the configuration of the svnserve daemon, if you
### use it to allow access to this repository. (If you only allow
### access through http: and/or file: URLs, then this file is
### irrelevant.)

### Visit http://subversion.tigris.org/ for more information.

[general]
### These options control access to the repository for unauthenticated
### and authenticated users. Valid values ​​are "write", "read",
### and "none". The sample settings below are the defaults.
anon-access = read
auth-access = write

Like the above configuration file, anon-access is on the top line, which is no problem, but auth-access has leading spaces, which will cause this error.
To avoid this error, when removing the # in front of these lines, you should also remove the preceding spaces