System error

Error during compilation of /var/www/website/perl/lieder/find_flines.html:
Scalar found where operator expected (Missing semicolon on previous line?) at /var/www/website/perl/lieder/find_flines.html line 53, near "$m"
  (Might be a runaway multi-line '' string starting on line 50)
syntax error at /var/www/website/perl/lieder/find_flines.html line 53, near "$m"
Execution of /var/www/website/perl/lieder/find_flines.html aborted due to compilation errors.

Stack:
  [/var/www/website/perl/lieder/find_flines.html:53]
  [/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 24):8]
  [/var/www/website/perl/lieder/find_flines.html:53]



Trace begun at /usr/share/perl5/HTML/Mason/Interp.pm line 851
HTML::Mason::Interp::_compilation_error('HTML::Mason::Interp=HASH(0x56a387db9ca0)', '/var/www/website/perl/lieder/find_flines.html', 'HTML::Mason::Exception::Compilation=HASH(0x56a387e0ae18)') called at /usr/share/perl5/HTML/Mason/Interp.pm line 450
HTML::Mason::Interp::load('HTML::Mason::Interp=HASH(0x56a387db9ca0)', '/lieder/find_flines.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(0x56a38d113068)') called at /usr/share/perl5/HTML/Mason/Request.pm line 212
HTML::Mason::Request::new('HTML::Mason::Request::ApacheHandler', 'error_format', 'html', 'error_mode', 'output', 'interp', 'HTML::Mason::Interp=HASH(0x56a387db9ca0)', 'comp', '/lieder/find_flines.html', 'args', 'ARRAY(0x56a38c83e928)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x56a387d97510)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x56a38d1dd1e0)', 'container', 'HASH(0x56a38d1f39b8)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 94
HTML::Mason::Request::ApacheHandler::new('HTML::Mason::Request::ApacheHandler', 'error_format', 'html', 'error_mode', 'output', 'interp', 'HTML::Mason::Interp=HASH(0x56a387db9ca0)', 'comp', '/lieder/find_flines.html', 'args', 'ARRAY(0x56a38c83e928)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x56a387d97510)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x56a38d1dd1e0)', 'container', 'HASH(0x56a38d1f39b8)') called at /usr/share/perl5/Class/Container.pm line 275
Class::Container::call_method('HTML::Mason::Interp=HASH(0x56a387db9ca0)', 'request', 'new', 'interp', 'HTML::Mason::Interp=HASH(0x56a387db9ca0)', 'comp', '/lieder/find_flines.html', 'args', 'ARRAY(0x56a38c83e928)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x56a387d97510)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x56a38d1dd1e0)', 'container', 'HASH(0x56a38d1f39b8)') called at /usr/share/perl5/Class/Container.pm line 353
Class::Container::create_delayed_object(undef, undef, 'interp', 'HTML::Mason::Interp=HASH(0x56a387db9ca0)', 'comp', '/lieder/find_flines.html', 'args', 'ARRAY(0x56a38c83e928)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x56a387d97510)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x56a38d1dd1e0)', 'container', 'HASH(0x56a38d1f39b8)') called at /usr/share/perl5/HTML/Mason/Interp.pm line 348
HTML::Mason::Interp::make_request('HTML::Mason::Interp=HASH(0x56a387db9ca0)', 'comp', '/lieder/find_flines.html', 'args', 'ARRAY(0x56a38c83e928)', 'ah', 'HTML::Mason::ApacheHandler=HASH(0x56a387d97510)', 'apache_req', 'Apache2::RequestRec=SCALAR(0x56a38d1dd1e0)') 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(0x56a387d97510)', 'Apache2::RequestRec=SCALAR(0x56a38d1dd1e0)') called at /usr/share/perl5/HTML/Mason/ApacheHandler.pm line 828
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0x56a387d97510)', 'Apache2::RequestRec=SCALAR(0x56a38d1dd1e0)') called at (eval 24) line 8
HTML::Mason::ApacheHandler::handler('HTML::Mason::ApacheHandler', 'Apache2::RequestRec=SCALAR(0x56a38d1dd1e0)') called at -e line 0
eval {...} at -e line 0