在后台的“控制面板设置中”，登陆超时限制的默认时间为30分钟，我想更改成60分钟，更改后点“设置”的时候，出现下面的提示，怎么回事？

ps：我在本地调试

引用:
Incorrect integer value: '' for column 'newslink' at row 1
update phome_enewspublic set sitename='帝国开发',siteurl='/',newsurl='/',email='admin@phome.net',filetype='|.gif|.jpg|.swf|.rar|.zip|.mp3|.wmv|',filesize='2048',hotnum='10',newnum='10',sub_hot='26',sub_new='26',relistnum='30',renewsnum='200',min_keyboard='2',max_keyboard='20',search_num='20',search_pagenum='16',newslink='',search_color='#cccccc',checked='',pltime='20',searchtime='10',loginnum='10',logintime='5',addnews_ok='0',register_ok='0',indextype='.html',goodlencord='25',goodtype='.html',goodnum='10',sub_good='26',searchtype='.html',exittime='60',smalltextlen='200',defaultgroupid='1',fileurl='/d/file/',phpmode='',ftphost='',ftpport='21',ftpusername='',ftppath='/',ftpmode='',install='0',searchsubnews='160',plsize='500',plincludesize='',hotshowdate='1',newshowdate='1',goodshowdate='1',hotplnum='10',sub_hotpl='26',hotplshowdate='1',dorepnum='500',loadtempnum='50',firstnum='10',sub_first='26',firstshowdate='1',bakdbpath='bdata',bakdbzip='zip',downpass='fdfdfdsega',dwwidth='300',dwheight='300',down_num='2',min_userlen='3',max_userlen='20',min_passlen='3',max_passlen='20',filechmod='1',sametitle='0',addrehtml='',loginkey_ok='0',limittype='1',plkey_ok='1',redodown='1',fpnum='0',havefp='',candocode='0',opennotcj='0',reuserpagenum='50',revotejsnum='100',readjsnum='100',qaddtran='',qaddtransize='50',ebakthisdb='',delnewsnum='300',openclasspv='',openpagepv='1',markpos='5',markimg='../data/mark/maskdef.gif',marktext='www.phome.net',markfontsize='5',markfontcolor='#FF0000',markfont='../data/mark/cour.ttf',adminloginkey='0',php_outtime='0',listpagefun='sys_ShowListPage',textpagefun='sys_ShowTextPage',adfile='thea',notsaveurl='http://localhost/',addreinfo='1',rssnum='20',rsssub='300',dorepdlevelnum='300',listpagelistfun='sys_ShowListMorePage',listpagelistnum='10'