System error

Error during compilation of /var/www/www.reinhammar.org/docs/about/index.html:
Malformed UTF-8 character: \xe4\x67\x61 (unexpected non-continuation byte 0x67, immediately after start byte 0xe4; need 3 bytes, got 1) at /var/www/www.reinhammar.org/docs/about/index.html line 22.
Malformed UTF-8 character (fatal) at /var/www/www.reinhammar.org/docs/about/index.html line 22.

Stack:
  [/var/www/www.reinhammar.org/docs/about/index.html:22]
  [/usr/share/perl5/HTML/Mason/Interp.pm:817]
  [/usr/share/perl5/HTML/Mason/Interp.pm:445]
  [/usr/share/perl5/HTML/Mason/Request.pm:250]
  [/usr/share/perl5/HTML/Mason/Request.pm:212]
  [/usr/share/perl5/HTML/Mason/ApacheHandler.pm:94]
  [/usr/share/perl5/Class/Container.pm:275]
  [/usr/share/perl5/Class/Container.pm:353]
  [/usr/share/perl5/HTML/Mason/Interp.pm:348]
  [/usr/share/perl5/HTML/Mason/ApacheHandler.pm:874]
  [/usr/share/perl5/HTML/Mason/ApacheHandler.pm:828]
  [(eval 23):8]
  [/var/www/www.reinhammar.org/docs/about/index.html:22]



Trace begun at /usr/share/perl5/HTML/Mason/Interp.pm line 851
HTML::Mason::Interp::_compilation_error('HTML::Mason::Interp=HASH(0x563b077760e8)', '/var/www/www.reinhammar.org/docs/about/index.html', 'HTML::Mason::Exception::Compilation=HASH(0x563b0902c3f8)') called at /usr/share/perl5/HTML/Mason/Interp.pm line 450
HTML::Mason::Interp::load('HTML::Mason::Interp=HASH(0x563b077760e8)', '/about/index.html') called at /usr/share/perl5/HTML/Mason/Request.pm line 250
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 232
HTML::Mason::Request::_initialize('HTML::Mason::Request::ApacheHandler=HASH(0x563b08fb7af8)') called at /usr/share/perl5/HTML/Mason/Request.pm line 212
HTML::Mason::Request::new('HTML::Mason::Request::ApacheHandler', 'error_mode', 'output', 'error_format', 'html', 'interp', 'HTML::Mason::Interp=HASH(0x563b077760e8)', 'comp', '/about/index.html', 'args', 'ARRAY(0x563b08fb7d08)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x563b09062640)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x563b0903ef08)', 'container', 'HASH(0x563b090255d0)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 94
HTML::Mason::Request::ApacheHandler::new('HTML::Mason::Request::ApacheHandler', 'error_mode', 'output', 'error_format', 'html', 'interp', 'HTML::Mason::Interp=HASH(0x563b077760e8)', 'comp', '/about/index.html', 'args', 'ARRAY(0x563b08fb7d08)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x563b09062640)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x563b0903ef08)', 'container', 'HASH(0x563b090255d0)') called at /usr/share/perl5/Class/Container.pm line 275
Class::Container::call_method('HTML::Mason::Interp=HASH(0x563b077760e8)', 'request', 'new', 'interp', 'HTML::Mason::Interp=HASH(0x563b077760e8)', 'comp', '/about/index.html', 'args', 'ARRAY(0x563b08fb7d08)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x563b09062640)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x563b0903ef08)', 'container', 'HASH(0x563b090255d0)') called at /usr/share/perl5/Class/Container.pm line 353
Class::Container::create_delayed_object(undef, undef, 'interp', 'HTML::Mason::Interp=HASH(0x563b077760e8)', 'comp', '/about/index.html', 'args', 'ARRAY(0x563b08fb7d08)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x563b09062640)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x563b0903ef08)', 'container', 'HASH(0x563b090255d0)') called at /usr/share/perl5/HTML/Mason/Interp.pm line 348
HTML::Mason::Interp::make_request('HTML::Mason::Interp=HASH(0x563b077760e8)', 'comp', '/about/index.html', 'args', 'ARRAY(0x563b08fb7d08)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x563b09062640)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x563b0903ef08)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 874
eval {...} at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 873
HTML::Mason::ApacheHandler::prepare_request('HTML::Mason::ApacheHandler=HASH(0x563b09062640)', 'Apache2::RequestRec=SCALAR(0x563b0903ef08)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 828
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0x563b09062640)', 'Apache2::RequestRec=SCALAR(0x563b0903ef08)') called at (eval 23) line 8
HTML::Mason::ApacheHandler::handler('HTML::Mason::ApacheHandler', 'Apache2::RequestRec=SCALAR(0x563b0903ef08)') called at -e line 0
eval {...} at -e line 0