Liferay 6.2 Error: Current URL null generates exception: java.lang.IllegalStateException: Page needs a session and none is available

Liferay 6.2 error:

Current URL null generates exception: java.lang.IllegalStateException: Page needs a session and none is available

Fix:

Add to portal-setup-wizard.properties:

layout.parallel.render.timeout=30000

More info:

https://www.liferay.com/community/forums/-/message_boards/message/34977579

Liferay 6.2 Error: java.lang.ClassNotFoundException: org.apache.jsp.html.portlet.dockbar.view_jsp

Liferay 6.2 Error:

java.lang.ClassNotFoundException: org.apache.jsp.html.portlet.dockbar.view_jsp

Fix:

1. Check /webapps/ROOT/html/portlet/dockbar/view_user_account.jspf file.

2. Check  if such line exists at the end:

<%@ include file="/html/portlet/dockbar/view_user_account.portal.jspf" %>

3. If so - create empty view_user_account.portal.jspf file.

More info:
https://www.liferay.com/community/forums/-/message_boards/message/26264574