I created WSRP Producer for weblogic with using ZK Framework, but my portlet fails with error "Remote Portlet Error" (see screen-shot portlet_error.png). Stacktrace of error attached as DefaultServer-diagnostic.log. In debug mode I found that portlet execution fails on line 310 in class DHtmlLayoutPortlet (for zk 7.0.2 - see screen-shot debug.png). It happened because url.toString() returned value "wsrp_rewrite?wsrp-urlType=resource&wsrp-secureURL=false&wsrp-url=&wsrp-requiresRewrite=&wsrp-sessionID=2dqtTbGGhZncr39DMPstlhlM24FJ7nSv7Jhrpfj8XJcwLq3zKyVV%21980600973%211406895300971&wsrp-resourceID=_wlp-nullResId&wsrp-resourceState=eJyLL07OL0i1zc1PSQ0GsVLUiooKbNXSc-KTEnNsAbM4C0U&wsrp-resourceCacheability=page&wsrp-preferOperation=true&wsrp-extensions=oracle%253Aescape-xml%3Dfalse%26oracle%253AimmutableURI%3D%26oracle%253AmutableURI%3D_wlp-nullResId%26oracle%253AmutableParameters%3D%26oracle%253AresourceStateForRewrite%3DeJyLL07OL0i1zc1PSQ0GsVLUiooKbAFjPAhx/wsrp_rewrite" which cannot decode in portlet. As portlet customer I used WebCenter Portal application (attached as TestApplication.zip). As a portlet producer I used application from https://github.com/nik-lazer/java-learn/tree/master/zk/hello/