AEM 6.2 Siteadmin, login page not working

[CQ_learner]

Hi Community,

Am trying to start AEM 6.2 instance but seems like there is some issue with my system the siteadmin page, login page, welcome screen , package manager none of these are working. I have tried installing new jar, i have tried installing AEM 6, 6.1, 6.2 and 6.3 but to no avail, in all these instances i get the same error.

Login page gives the below error -

Cannot serve request to /libs/granite/core/content/login.html in /libs/granite/core/components/login/login.jsp

Exception:

Cannot serve request to /libs/granite/core/content/login.html in /libs/granite/core/components/login/login.jsp
Exception:
java.lang.NullPointerException
at org.apache.jsp.libs.granite.core.components.login.login_jsp._jspService(login_jsp.java:161)
at org.apache.sling.scripting.jsp.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.sling.scripting.jsp.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:502)
at org.apache.sling.scripting.jsp.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:449)
at org.apache.sling.scripting.jsp.JspScriptEngineFactory.callJsp(JspScriptEngineFactory.java:284)
at org.apache.sling.scripting.jsp.JspScriptEngineFactory.access$100(JspScriptEngineFactory.java:102)
at org.apache.sling.scripting.jsp.JspScriptEngineFactory$JspScriptEngine.eval(JspScriptEngineFactory.java:536)
at org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:388)
at org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:184)
at org.apache.sling.scripting.core.impl.DefaultSlingScript.service(DefaultSlingScript.java:491)
...
After I go to crx/de and login using admin creds, package manager, siteadmin and none other links work except felix console. I have checked the
bundles, everything seem to be fine and in active state.
Follwong are the error ---
http://localhost:4502/content/we-retail.html 

Error during include of component '/libs/wcm/foundation/components/page'

Error Message:

org.apache.sling.api.scripting.ScriptEvaluationException: org.apache.sling.scripting.sightly.SightlyException: org.apache.sling.api.scripting.ScriptEvaluationException: org.apache.sling.scripting.sightly.SightlyException: org.apache.sling.api.scripting.ScriptEvaluationException: org.apache.sling.scripting.sightly.SightlyException: org.mozilla.javascript.EcmaError: ReferenceError: "currentPage" is not defined. (/libs/wcm/foundation/components/page/initwcm.js#26)
http://localhost:4502/crx/packmgr/ 

Resource at '/crx/packmgr/' not found: No resource found

Cannot serve request to /crx/packmgr/ in /libs/sling/servlet/errorhandler/404.jsp

Request Progress:

      0 TIMER_START{Request Processing} 0 COMMENT timer_end format is {<elapsed msec>,<timer name>} <optional message> 0 LOG Method=GET, PathInfo=/crx/packmgr/ 0 TIMER_START{ResourceResolution} 0 TIMER_END{0,ResourceResolution} URI=/crx/packmgr/ resolves to Resource=NonExistingResource, path=/crx/packmgr/ 0 LOG Resource Path Info: SlingRequestPathInfo: path='/crx/packmgr/', selectorString='null', extension='null', suffix='null' 0 TIMER_START{ServletResolution} 0 TIMER_START{resolveServlet(/crx/packmgr/)} 1 LOG {0}: no servlet found 1 TIMER_END{1,resolveServlet(/crx/packmgr/)} Using servlet org.apache.sling.servlets.get.DefaultGetServlet 1 TIMER_END{1,ServletResolution} URI=/crx/packmgr/ handled by Servlet=org.apache.sling.servlets.get.DefaultGetServlet 1 LOG Applying Requestfilters 1 LOG Calling filter: com.adobe.granite.resourceresolverhelper.impl.ResourceResolverHelperImpl 1 LOG Calling filter: org.apache.sling.bgservlets.impl.BackgroundServletStarterFilter 2 LOG Calling filter: com.adobe.granite.rest.impl.servlet.ApiResourceFilter 2 LOG Calling filter: org.apache.sling.i18n.impl.I18NFilter 2 LOG Calling filter: com.adobe.granite.httpcache.impl.InnerCacheFilter 2 LOG Calling filter: org.apache.sling.rewriter.impl.RewriterFilter 2 LOG Calling filter: com.adobe.cq.mcm.campaign.servlets.CampaignCopyTracker
http://localhost:4502/siteadmin 

Internal Server Error

Cannot serve request to /siteadmin in /libs/cq/ui/components/widget/html.jsp

Exception:

java.lang.NullPointerException at org.apache.jsp.libs.cq.ui.components.widget.html_jsp._jspService(html_jsp.java:170) at org.apache.sling.scripting.jsp.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) at org.apache.sling.scripting.jsp.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:502) at org.apache.sling.scripting.jsp.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:449) at org.apache.sling.scripting.jsp.JspScriptEngineFactory.callJsp(JspScriptEngineFactory.java:284) at org.apache.sling.scripting.jsp.JspScriptEngineFactory.access$100(JspScriptEngineFactory.java:102) at org.apache.sling.scripting.jsp.JspScriptEngineFactory$JspScriptEngine.eval(JspScriptEngineFactory.java:536) at org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:388) at org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:184)

I have tried removing indexes, restarting my system, uninstalling java 8 and installing java 7 and tried as well. but nothing seem to be working.

Can someone please help me out.

Thanks!!