Remove Velocity error in logs when displaying the Log in page and the Registration page

14:24:37,499 ERROR P1-19 http://localhost:8080/xwiki/bin/login/XWiki/XWikiLogin SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($paneldoc.fullName) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible.  [line 3, column 25]
14:24:37,502 ERROR P1-19 http://localhost:8080/xwiki/bin/login/XWiki/XWikiLogin SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($paneldoc.fullName) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible.  [line 3, column 25]
14:24:37,503 ERROR P1-19 http://localhost:8080/xwiki/bin/login/XWiki/XWikiLogin SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($paneldoc.fullName) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible.  [line 3, column 25]
14:24:37,562 ERROR P1-18 http://localhost:8080/xwiki/bin/view/Main/ SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($paneldoc.fullName) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible.  [line 3, column 25]
14:24:37,568 ERROR P1-18 http://localhost:8080/xwiki/bin/view/Main/ SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($paneldoc.fullName) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible.  [line 3, column 25]
14:24:37,569 ERROR P1-18 http://localhost:8080/xwiki/bin/view/Main/ SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($paneldoc.fullName) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible.  [line 3, column 25]
14:24:37,756 ERROR P1-18 http://localhost:8080/xwiki/bin/skin/skins/albatross/style.css SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($paneldoc.fullName) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible.  [line 3, column 25]
14:24:37,757 ERROR P1-18 http://localhost:8080/xwiki/bin/skin/skins/albatross/style.css SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($paneldoc.fullName) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible.  [line 3, column 25]
14:24:37,768 ERROR P1-18 http://localhost:8080/xwiki/bin/skin/skins/albatross/style.css SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($paneldoc.fullName) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible.  [line 3, column 25]

14:44:45,596 ERROR P1-19 http://localhost:8080/xwiki/bin/register/XWiki/Register SimpleLog4JLogSystem:logVelocityMessage:154 - Left side ($reg) of '<=' operation has null value. Operation not possible.  [line 6, column 11]