Got error 'this version of PCRE is compiled without UTF support at offset 0' from regexp

Fatal error: Could not execute prepared statement: SQLSTATE[42000]: Syntax error or access violation: 1139 Got error 'this version of PCRE is compiled without UTF support at offset 0' from regexp
Information:
id: 60044320dfdd1b9f5d826ca765f628d46360fcfb
error message: Could not execute prepared statement: SQLSTATE[42000]: Syntax error or access violation: 1139 Got error 'this version of PCRE is compiled without UTF support at offset 0' from regexp
error code: 42000
sql type: wcf\system\database\MySQLDatabase
sql error: Got error 'this version of PCRE is compiled without UTF support at offset 0' from regexp
sql error number: 42000
sql version: 5.5.5-10.1.10-MariaDB
sql query: SELECT filename, application FROM wcf1_package_installation_file_log WHERE filename REGEXP ? ORDER BY packageID
sql query parameter 0:style/([a-zA-Z0-9\_\-\.]+)\.less
file: /opt/lampp/htdocs/dev/wcf/lib/system/database/statement/PreparedStatement.class.php (97)
php version: 7.0.2
wcf version: 2.1.6 (Typhoon)
date: Fri, 19 Feb 2016 19:33:57 +0000
request: /dev/wcf/acp/index.php?install-package/&&
referer: http://192.168.2.10/dev/wcf/acp/index.php?&action=WCFSetup
Stacktrace:
#0 /opt/lampp/htdocs/dev/wcf/lib/system/style/StyleCompiler.class.php(62): wcf\system\database\statement\PreparedStatement->execute(Array)
#1 /opt/lampp/htdocs/dev/wcf/lib/data/style/StyleEditor.class.php(827): wcf\system\style\StyleCompiler->compile(Object(wcf\data\style\Style))
#2 /opt/lampp/htdocs/dev/wcf/lib/data/style/StyleEditor.class.php(820): wcf\data\style\StyleEditor->writeStyleFile()
#3 /opt/lampp/htdocs/dev/wcf/lib/data/style/StyleEditor.class.php(863): wcf\data\style\StyleEditor->setVariables(Array)
#4 /opt/lampp/htdocs/dev/wcf/lib/data/style/StyleEditor.class.php(458): wcf\data\style\StyleEditor::create(Array)
#5 /opt/lampp/htdocs/dev/wcf/lib/system/package/plugin/StylePackageInstallationPlugin.class.php(33): wcf\data\style\StyleEditor::import('/opt/lampp/htdo...', 1)
#6 /opt/lampp/htdocs/dev/wcf/lib/system/package/PackageInstallationDispatcher.class.php(571): wcf\system\package\plugin\StylePackageInstallationPlugin->install()
#7 /opt/lampp/htdocs/dev/wcf/lib/system/package/PackageInstallationDispatcher.class.php(139): wcf\system\package\PackageInstallationDispatcher->executePIP(Array)
#8 /opt/lampp/htdocs/dev/wcf/lib/acp/action/InstallPackageAction.class.php(73): wcf\system\package\PackageInstallationDispatcher->install('08692391')
#9 /opt/lampp/htdocs/dev/wcf/lib/action/AbstractDialogAction.class.php(70): wcf\acp\action\InstallPackageAction->stepInstall()
#10 /opt/lampp/htdocs/dev/wcf/lib/action/AbstractAction.class.php(49): wcf\action\AbstractDialogAction->execute()
#11 /opt/lampp/htdocs/dev/wcf/lib/system/request/Request.class.php(58): wcf\action\AbstractAction->__run()
#12 /opt/lampp/htdocs/dev/wcf/lib/system/request/RequestHandler.class.php(139): wcf\system\request\Request->execute()
#13 /opt/lampp/htdocs/dev/wcf/acp/index.php(10): wcf\system\request\RequestHandler->handle('wcf', true)
#14 {main}