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[code]

PHP Fatal error:  Uncaught Error: Class "Doctrine\Common\Cache\MemcachedCache" not found in /~/src/XF/Cache/MemcachedCache.php:9

Stack trace:

#0 /~/src/vendor/composer/ClassLoader.php(576): include()

#1 /~/src/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('...')

#2 /~/src/XF/CacheFactory.php(197): Composer\Autoload\ClassLoader->loadClass('...')

#3 /~/src/XF/CacheFactory.php(81): XF\CacheFactory->createMemcachedCache(Array)

#4 /~/src/XF/CacheFactory.php(36): XF\CacheFactory->instantiate('...', Array)

#5 /~/src/XF/App.php(707): XF\CacheFactory->create('...', Array)

#6 /~/src/XF/Container.php(234): XF\App->XF\{closure}('', Array, Object(XF\Container))

#7 /~/src/XF/App.php(2659): XF\Container->create('...', '')

#8 /~/src/XF/App.php(734): XF\App->cache('...')

#9 /~/src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))

#10 /~/src/XF/App.php(1929): XF\Container->offsetGet('...')

#11 /~/src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))

#12 /~/src/XF/App.php(1595): XF\Container->offsetGet('...')

#13 /~/src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))

#14 /~/src/XF/App.php(2978): XF\Container->offsetGet('...')

#15 /~/src/XF/App.php(3009): XF\App->extension()

#16 /~/src/XF/App.php(1115): XF\App->extendClass('...')

#17 /~/src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))

#18 /~/src/XF/App.php(2734): XF\Container->offsetGet('...')

#19 /~/src/XF.php(944): XF\App->fs()

#20 /~/src/XF/Util/File.php(770): XF::fs()

#21 /~/src/XF/Error.php(102): XF\Util\File::installLockExists()

#22 /~/src/XF/App.php(2496): XF\Error->logException(Object(Error), true, '')

#23 /~/src/XF.php(202): XF\App->logException(Object(Error), true)

#24 [internal function]: XF::handleException(Object(Error))

#25 {main}

  thrown in /~/src/XF/Cache/MemcachedCache.php on line 9

[/code]

[code]

PHP Fatal error:  Uncaught Error: Class "Doctrine\Common\Cache\VoidCache" not found in /~/src/XF/CacheFactory.php:251

Stack trace:

#0 /~/src/XF/CacheFactory.php(81): XF\CacheFactory->createVoidCache(Array)

#1 /~/src/XF/CacheFactory.php(36): XF\CacheFactory->instantiate('...', Array)

#2 /~/src/XF/App.php(707): XF\CacheFactory->create('...', Array)

#3 /~/src/XF/Container.php(234): XF\App->XF\{closure}('', Array, Object(XF\Container))

#4 /~/src/XF/App.php(2659): XF\Container->create('...', '')

#5 /~/src/XF/App.php(734): XF\App->cache('...')

#6 /~/src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))

#7 /~/src/XF/App.php(1929): XF\Container->offsetGet('...')

#8 /~/src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))

#9 /~/src/XF/App.php(1595): XF\Container->offsetGet('...')

#10 /~/src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))

#11 /~/src/XF/App.php(2978): XF\Container->offsetGet('...')

#12 /~/src/XF/App.php(3009): XF\App->extension()

#13 /~/src/XF/App.php(1115): XF\App->extendClass('...')

#14 /~/src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))

#15 /~/src/XF/App.php(2734): XF\Container->offsetGet('...')

#16 /~/src/XF.php(944): XF\App->fs()

#17 /~/src/XF/Util/File.php(770): XF::fs()

#18 /~/src/XF/Error.php(102): XF\Util\File::installLockExists()

#19 /~/src/XF/App.php(2496): XF\Error->logException(Object(ErrorException), true, '')

#20 /~/src/XF.php(242): XF\App->logException(Object(ErrorException), true)

#21 [internal function]: XF::handleFatalError()

#22 {main}

  thrown in /~/src/XF/CacheFactory.php on line 251

[/code]

The entire install is hosed (blank page) -- I am also locked out of the Admin area and CLI by these errors.  The VoidCache error popped up after I commented out memcache from src/config.php.  I regained access by also commenting out the cache enabled line.

When I regained access, the hashes were corrupted so I had to manually download and overwrite the files with the new 2.3 ones.