Error: Class 'phpseclib3\Crypt\Rijndael' not found/opt/webdata/dokuwiki/dokuwiki/vendor/phpseclib/phpseclib/phpseclib/Crypt/AES.php(55)

  #0 /opt/webdata/dokuwiki/dokuwiki/vendor/composer/ClassLoader.php(582): include()
  #1 /opt/webdata/dokuwiki/dokuwiki/vendor/composer/ClassLoader.php(433): Composer\Autoload\{closure}()
  #2 [internal function]: Composer\Autoload\ClassLoader->loadClass()
  #3 /opt/webdata/dokuwiki/dokuwiki/inc/auth.php(392): spl_autoload_call()
  #4 /opt/webdata/dokuwiki/dokuwiki/lib/plugins/authldap/auth.php(181): auth_decrypt()
  #5 /opt/webdata/dokuwiki/dokuwiki/lib/plugins/authldap/auth.php(154): auth_plugin_authldap->fetchUserData()
  #6 /opt/webdata/dokuwiki/dokuwiki/inc/common.php(1670): auth_plugin_authldap->getUserData()
  #7 /opt/webdata/dokuwiki/dokuwiki/inc/common.php(1621): userlink()
  #8 /opt/webdata/dokuwiki/dokuwiki/inc/template.php(890): editorinfo()
  #9 /opt/webdata/dokuwiki/dokuwiki/lib/tpl/dokuwiki/main.php(64): tpl_pageinfo()
  #10 /opt/webdata/dokuwiki/dokuwiki/inc/actions.php(27): include('/opt/webdata/do...')
  #11 /opt/webdata/dokuwiki/dokuwiki/doku.php(126): act_dispatch()
  #12 {main}

Error: Call to undefined function dokuwiki\Parsing\Lexer\str_starts_with()/opt/webdata/dokuwiki/dokuwiki/inc/Parsing/Lexer/ParallelRegex.php(181)

  #0 /opt/webdata/dokuwiki/dokuwiki/inc/Parsing/Lexer/ParallelRegex.php(103): dokuwiki\Parsing\Lexer\ParallelRegex->getCompoundedRegex()
  #1 /opt/webdata/dokuwiki/dokuwiki/inc/Parsing/Lexer/Lexer.php(292): dokuwiki\Parsing\Lexer\ParallelRegex->split()
  #2 /opt/webdata/dokuwiki/dokuwiki/inc/Parsing/Lexer/Lexer.php(142): dokuwiki\Parsing\Lexer\Lexer->reduce()
  #3 /opt/webdata/dokuwiki/dokuwiki/inc/Parsing/Parser.php(109): dokuwiki\Parsing\Lexer\Lexer->parse()
  #4 /opt/webdata/dokuwiki/dokuwiki/inc/parserutils.php(234): dokuwiki\Parsing\Parser->parse()
  #5 /opt/webdata/dokuwiki/dokuwiki/inc/parserutils.php(198): p_get_instructions()
  #6 /opt/webdata/dokuwiki/dokuwiki/inc/parserutils.php(525): p_cached_instructions()
  #7 /opt/webdata/dokuwiki/dokuwiki/inc/parserutils.php(299): p_render_metadata()
  #8 /opt/webdata/dokuwiki/dokuwiki/inc/common.php(266): p_get_metadata()
  #9 /opt/webdata/dokuwiki/dokuwiki/doku.php(97): pageinfo()
  #10 {main}

splitbrain\PHPArchive\FileInfoException: /opt/webdata/dokuwiki/farm/wiki.piratenpartij.nl/data/pages/blaat/_template.txt does not exist/opt/webdata/dokuwiki/dokuwiki/vendor/splitbrain/php-archive/src/FileInfo.php(71)
#0 /opt/webdata/dokuwiki/dokuwiki/vendor/splitbrain/php-archive/src/Tar.php(273): splitbrain\PHPArchive\FileInfo::fromPath()
#1 /opt/webdata/dokuwiki/dokuwiki/lib/plugins/backup/admin.php(334): splitbrain\PHPArchive\Tar->addFile()
#2 /opt/webdata/dokuwiki/dokuwiki/lib/plugins/backup/admin.php(414): admin_plugin_backup->addDirectoryToTar()
#3 /opt/webdata/dokuwiki/dokuwiki/lib/plugins/backup/admin.php(293): admin_plugin_backup->backupPages()
#4 /opt/webdata/dokuwiki/dokuwiki/lib/plugins/backup/admin.php(154): admin_plugin_backup->createBackup()
#5 /opt/webdata/dokuwiki/dokuwiki/lib/plugins/backup/admin.php(58): admin_plugin_backup->runBackup()
#6 /opt/webdata/dokuwiki/dokuwiki/inc/template.php(188): admin_plugin_backup->html()
#7 /opt/webdata/dokuwiki/dokuwiki/inc/Action/Admin.php(40): tpl_admin()
#8 /opt/webdata/dokuwiki/dokuwiki/inc/template.php(100): dokuwiki\Action\Admin->tplContent()
#9 [internal function]: tpl_content_core()
#10 /opt/webdata/dokuwiki/dokuwiki/inc/Extension/Event.php(133): call_user_func_array()
#11 /opt/webdata/dokuwiki/dokuwiki/inc/Extension/Event.php(199): dokuwiki\Extension\Event->trigger()
#12 /opt/webdata/dokuwiki/dokuwiki/inc/template.php(85): dokuwiki\Extension\Event::createAndTrigger()
#13 /opt/webdata/dokuwiki/dokuwiki/lib/tpl/dokuwiki/main.php(59): tpl_content()
#14 /opt/webdata/dokuwiki/dokuwiki/inc/actions.php(27): include('/opt/webdata/do...')
#15 /opt/webdata/dokuwiki/dokuwiki/doku.php(126): act_dispatch()
#16 {main}