Warning: Undefined array key 316 in /home/.sites/6/site2205/web/SilverStripe/vendor/nikic/php-parser/lib/PhpParser/Lexer.php on line 293

Fatal error: Uncaught TypeError: PhpParser\Lexer::getNextToken(): Return value must be of type int, null returned in /home/.sites/6/site2205/web/SilverStripe/vendor/nikic/php-parser/lib/PhpParser/Lexer.php:327
Stack trace:
#0 /home/.sites/6/site2205/web/SilverStripe/vendor/nikic/php-parser/lib/PhpParser/ParserAbstract.php(208): PhpParser\Lexer->getNextToken('SilverStripe\\CM...', Array, Array)
#1 /home/.sites/6/site2205/web/SilverStripe/vendor/nikic/php-parser/lib/PhpParser/ParserAbstract.php(158): PhpParser\ParserAbstract->doParse()
#2 /home/.sites/6/site2205/web/SilverStripe/vendor/nikic/php-parser/lib/PhpParser/Parser/Multiple.php(51): PhpParser\ParserAbstract->parse('<?php\n namespac...', Object(SilverStripe\Core\Manifest\ClassManifestErrorHandler))
#3 /home/.sites/6/site2205/web/SilverStripe/vendor/nikic/php-parser/lib/PhpParser/Parser/Multiple.php(32): PhpParser\Parser\Multiple->tryParse(Object(PhpParser\Parser\Php7), Object(SilverStripe\Core\Manifest\ClassManifestErrorHandler), '<?php\n namespac...')
#4 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Core/Manifest/ClassManifest.php(569): PhpParser\Parser\Multiple->parse('<?php\n namespac...', Object(SilverStripe\Core\Manifest\ClassManifestErrorHandler))
#5 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Core/Manifest/ClassManifest.php(517): SilverStripe\Core\Manifest\ClassManifest->handleFile('Page.php', '/home/.sites/6/...', false)
#6 [internal function]: SilverStripe\Core\Manifest\ClassManifest->SilverStripe\Core\Manifest\{closure}('Page.php', '/home/.sites/6/...', 2)
#7 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/assets/src/FileFinder.php(179): call_user_func(Object(Closure), 'Page.php', '/home/.sites/6/...', 2)
#8 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Core/Manifest/ClassManifest.php(520): SilverStripe\Assets\FileFinder->find('/home/.sites/6/...')
#9 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Core/Manifest/ClassManifest.php(278): SilverStripe\Core\Manifest\ClassManifest->regenerate(false)
#10 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Core/Manifest/ClassLoader.php(129): SilverStripe\Core\Manifest\ClassManifest->init(false, false)
#11 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Core/CoreKernel.php(515): SilverStripe\Core\Manifest\ClassLoader->init(false, false)
#12 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Core/CoreKernel.php(194): SilverStripe\Core\CoreKernel->bootManifests(false)
#13 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Control/HTTPApplication.php(135): SilverStripe\Core\CoreKernel->boot(false)
#14 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Control/Middleware/HTTPMiddlewareAware.php(65): SilverStripe\Control\HTTPApplication->SilverStripe\Control\{closure}(Object(SilverStripe\Control\HTTPRequest))
#15 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Control/HTTPApplication.php(137): SilverStripe\Control\HTTPApplication->callMiddleware(Object(SilverStripe\Control\HTTPRequest), Object(Closure))
#16 /home/.sites/6/site2205/web/SilverStripe/vendor/silverstripe/framework/src/Control/HTTPApplication.php(116): SilverStripe\Control\HTTPApplication->execute(Object(SilverStripe\Control\HTTPRequest), Object(Closure), false)
#17 /home/.sites/6/site2205/web/SilverStripe/public/index.php(24): SilverStripe\Control\HTTPApplication->handle(Object(SilverStripe\Control\HTTPRequest))
#18 {main}
  thrown in /home/.sites/6/site2205/web/SilverStripe/vendor/nikic/php-parser/lib/PhpParser/Lexer.php on line 327