Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access violation: 1286 Unknown storage engine 'InnoDB'' in /home/wpcomhk/member/includes/database/database.inc:2171 Stack trace: #0 /home/wpcomhk/member/includes/database/database.inc(2171): PDOStatement->execute(Array) #1 /home/wpcomhk/member/includes/database/database.inc(683): DatabaseStatementBase->execute(Array, Array) #2 /home/wpcomhk/member/includes/database/database.inc(2350): DatabaseConnection->query('SELECT expire, ...', Array, Array) #3 /home/wpcomhk/member/includes/lock.inc(167): db_query('SELECT expire, ...', Array) #4 /home/wpcomhk/member/includes/lock.inc(146): lock_may_be_available('variable_init') #5 /home/wpcomhk/member/includes/bootstrap.inc(919): lock_acquire('variable_init', 1) #6 /home/wpcomhk/member/includes/bootstrap.inc(2488): variable_initialize(Array) #7 /home/wpcomhk/member/includes/bootstrap.inc(2249): _drupal_bootstrap_variables() #8 /home/wpcomhk/member/includes/bootstrap.inc(2386): drupal_bootstra in /home/wpcomhk/member/includes/database/database.inc on line 2171

Uncaught exception thrown in shutdown function.

PDOException: SQLSTATE[42000]: Syntax error or access violation: 1286 Unknown storage engine 'InnoDB': DELETE FROM {semaphore} WHERE (value = :db_condition_placeholder_0) ; Array ( [:db_condition_placeholder_0] => 17788352575cb91c22c3cc58.28842811 ) in lock_release_all() (line 269 of /home/wpcomhk/member/includes/lock.inc).