DB Error: Table './ojs/users' is marked as crashed and should be repaired

Stack Trace:

File: /home/webuser/revistas/public_html/lib/pkp/classes/user/PKPUserDAO.inc.php line 48
Function: DAO->retrieve("SELECT * FROM users WHERE user_id = ?", Array(1))

File: /home/webuser/revistas/public_html/lib/pkp/classes/comment/CommentDAO.inc.php line 162
Function: PKPUserDAO->getById("253458")

File: /home/webuser/revistas/public_html/lib/pkp/classes/comment/CommentDAO.inc.php line 134
Function: CommentDAO->_returnCommentFromRow(Array(12), 2)

File: /home/webuser/revistas/public_html/pages/comment/CommentHandler.inc.php line 52
Function: CommentDAO->getById(511204, 16402, 2)

File: (unknown) line (unknown)
Function: CommentHandler->view(Array(3), Object(Request))

File: /home/webuser/revistas/public_html/lib/pkp/classes/core/PKPRouter.inc.php line 362
Function: call_user_func(Array(2), Array(3), Object(Request))

File: /home/webuser/revistas/public_html/lib/pkp/classes/core/PKPPageRouter.inc.php line 220
Function: PKPRouter->_authorizeInitializeAndCallRequest(Array(2), Object(Request), Array(3), False)

File: /home/webuser/revistas/public_html/lib/pkp/classes/core/Dispatcher.inc.php line 134
Function: PKPPageRouter->route(Object(Request))

File: /home/webuser/revistas/public_html/lib/pkp/classes/core/PKPApplication.inc.php line 178
Function: Dispatcher->dispatch(Object(Request))

File: /home/webuser/revistas/public_html/index.php line 64
Function: PKPApplication->execute()