Still no luck.I recompiled as did engine-setup but still same issue. I tried in both (FF and Chrome)
I also tried to Compile with  DEV_EXTRA_BUILD_FLAGS_GWT_DEFAULTS="-Dgwt.userAgent=safari,gecko1_8" but webadmin giving compilation error like:

[INFO] 
[INFO] --- gwt-maven-plugin:2.8.0:compile (gwtcompile) @ webadmin ---
[INFO] info AspectJ Weaver Version 1.8.10 built on Monday Dec 12, 2016 at 19:07:48 GMT
[INFO] info register classloader sun.misc.Launcher$AppClassLoader@18b4aac2
[INFO] info using configuration file:/home/godas/workspace/ovirt-engine/frontend/webadmin/modules/gwt-aop/target/gwt-aop-4.3.0-SNAPSHOT.jar!/META-INF/aop.xml
[INFO] info register aspect org.ovirt.engine.ui.gwtaop.DontPrune
[INFO] Mar 22, 2018 12:58:37 PM java.util.prefs.FileSystemPreferences$1 run
[INFO] INFO: Created user preferences directory.
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/webadmin-4.3.0-SNAPSHOT/WEB-INF/classes failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/src/main/java failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/generated-sources/annotations failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/generated-sources/gwt failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/webadmin-4.3.0-SNAPSHOT/WEB-INF/classes failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/src/main/java failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/generated-sources/annotations failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/generated-sources/gwt failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/webadmin-4.3.0-SNAPSHOT/WEB-INF/classes failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/src/main/java failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/generated-sources/annotations failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] The attempt to retrieve files in /home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/generated-sources/gwt failed.
[ERROR] java.io.IOException: User limit of inotify watches reached
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.implRegister(LinuxWatchService.java:264)
[ERROR] at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
[ERROR] at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:364)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[INFO] Compiling module org.ovirt.engine.ui.webadmin.WebAdmin
[INFO] warning javax.* types are not being woven because the weaver option '-Xset:weaveJavaxPackages=true' has not been specified
[INFO]    Computing all possible rebind results for 'com.gwtplatform.mvp.client.ApplicationController'
[INFO]       Rebinding com.gwtplatform.mvp.client.ApplicationController
[INFO]          Invoking generator com.gwtplatform.mvp.rebind.ApplicationControllerGenerator
[INFO]             [ERROR] The type 'org.ovirt.engine.ui.webadmin.system.ApplicationInit' was not found, either the class name is wrong or there are compile errors in your code.
[INFO]             [ERROR] The type 'org.ovirt.engine.ui.webadmin.system.ApplicationInit' was not found, either the class name is wrong or there are compile errors in your code.
[INFO]             [ERROR] There was a problem generating the ApplicationController, this can be caused by bad GWT module configuration or compile errors in your source code.
[INFO]    [WARN] For the following type(s), generated source was never committed (did you forget to call commit()?)
[INFO]       [WARN] com.gwtplatform.mvp.client.ApplicationControllerImpl
[INFO]    [ERROR] Could not find com.gwtplatform.mvp.client.ApplicationControllerImpl in types compiled from source. Is the source glob too strict?
[INFO]    [ERROR] Errors in 'gen/com/google/gwt/lang/org_00046ovirt_00046engine_00046ui_00046webadmin_00046WebAdmin__EntryMethodHolder.java'
[INFO]       [ERROR] Line 3: Rebind result 'com.gwtplatform.mvp.client.ApplicationControllerImpl' could not be found
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] oVirt Findbugs Filters ............................. SUCCESS [  0.914 s]
[INFO] ovirt-root ......................................... SUCCESS [  1.138 s]
[INFO] oVirt Build Tools root ............................. SUCCESS [  0.480 s]
[INFO] oVirt checkstyle ................................... SUCCESS [  1.161 s]
[INFO] oVirt Checkstyle Checks ............................ SUCCESS [  1.298 s]
[INFO] oVirt Modules - backend ............................ SUCCESS [  0.477 s]
[INFO] oVirt Manager ...................................... SUCCESS [  0.440 s]
[INFO] oVirt Engine dependencies .......................... SUCCESS [  0.406 s]
[INFO] oVirt Engine common dependencies ................... SUCCESS [  1.485 s]
[INFO] oVirt Engine tools dependencies .................... SUCCESS [  0.490 s]
[INFO] Utilities to extend java.logging framework ......... SUCCESS [  0.781 s]
[INFO] Extensions API root ................................ SUCCESS [  0.175 s]
[INFO] ovirt-engine-extensions-api ........................ SUCCESS [  4.015 s]
[INFO] oVirt Modules - manager ............................ SUCCESS [  1.279 s]
[INFO] Universal utilities ................................ SUCCESS [ 13.829 s]
[INFO] Extensions manager ................................. SUCCESS [  2.554 s]
[INFO] GWT UI Compatibility ............................... SUCCESS [  2.837 s]
[INFO] Common Code ........................................ SUCCESS [ 16.813 s]
[INFO] Common utilities ................................... SUCCESS [ 21.710 s]
[INFO] Branding package ................................... SUCCESS [  3.830 s]
[INFO] ovirt-engine sso ................................... SUCCESS [  2.750 s]
[INFO] Data Access Layer .................................. SUCCESS [ 13.241 s]
[INFO] engine scheduler bean .............................. SUCCESS [  2.494 s]
[INFO] Vds broker ......................................... SUCCESS [ 19.855 s]
[INFO] builtin-extensions ................................. SUCCESS [  1.471 s]
[INFO] Search Backend ..................................... SUCCESS [  5.694 s]
[INFO] Backend Authentication, Authorization and Accounting SUCCESS [  3.395 s]
[INFO] Custom Application Server Authentication Plugin .... SUCCESS [  1.529 s]
[INFO] Backend Logic @Service bean ........................ SUCCESS [01:19 min]
[INFO] oVirt RESTful API Backend Integration .............. SUCCESS [  0.623 s]
[INFO] oVirt RESTful API interface ........................ SUCCESS [  0.563 s]
[INFO] oVirt Engine API Definition ........................ SUCCESS [ 26.998 s]
[INFO] oVirt Engine API Commom Parent POM ................. SUCCESS [  0.632 s]
[INFO] oVirt Engine API Common JAX-RS ..................... SUCCESS [  4.128 s]
[INFO] oVirt RESTful API Backend Integration Type Mappers . SUCCESS [ 11.256 s]
[INFO] oVirt RESTful API Backend Integration JAX-RS Resources SUCCESS [ 58.203 s]
[INFO] oVirt RESTful API Backend Integration Webapp ....... SUCCESS [  0.719 s]
[INFO] oVirt RESTful API Documentation .................... SUCCESS [  0.960 s]
[INFO] Custom Logger Using Extensions ..................... SUCCESS [  1.394 s]
[INFO] oVirt Engine Web Root .............................. SUCCESS [  0.890 s]
[INFO] ovirt-engine services .............................. SUCCESS [  2.293 s]
[INFO] ovirt-engine docs .................................. SUCCESS [  1.543 s]
[INFO] ovirt-engine welcome ............................... SUCCESS [  3.594 s]
[INFO] oVirt Engine Microbenchmarks ....................... SUCCESS [  6.231 s]
[INFO] oVirt Engine Tools ................................. SUCCESS [  5.764 s]
[INFO] oVirt Engine extensions tool ....................... SUCCESS [  2.274 s]
[INFO] oVirt Engine sso client registration tool .......... SUCCESS [  1.398 s]
[INFO] oVirt Modules :: Frontend .......................... SUCCESS [  0.504 s]
[INFO] oVirt Modules :: Brands ............................ SUCCESS [  0.622 s]
[INFO] oVirt Engine brand ................................. SUCCESS [  1.265 s]
[INFO] oVirt Modules :: Webadmin .......................... SUCCESS [  0.539 s]
[INFO] oVirt UI Modules ................................... SUCCESS [  0.657 s]
[INFO] AOP tweaks for GWT compiler ........................ SUCCESS [  2.388 s]
[INFO] Extensions for GWT ................................. SUCCESS [  2.587 s]
[INFO] UI Utils Compatibility (for UICommon) .............. SUCCESS [  3.766 s]
[INFO] Frontend for GWT UI Projects ....................... SUCCESS [ 14.865 s]
[INFO] UICommonWeb ........................................ SUCCESS [ 30.380 s]
[INFO] oVirt GWT UI common infrastructure ................. SUCCESS [ 21.623 s]
[INFO] Frontend Assembly Descriptors ...................... SUCCESS [  0.455 s]
[INFO] WebAdmin ........................................... FAILURE [ 51.844 s]
[INFO] oVirt Server EAR ................................... SKIPPED
[INFO] ovirt-engine maven make ............................ SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 07:48 min
[INFO] Finished at: 2018-03-22T12:59:06+05:30
[INFO] Final Memory: 640M/2353M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:gwt-maven-plugin:2.8.0:compile (gwtcompile) on project webadmin: Command [[
[ERROR] /bin/sh -c '/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.161-5.b14.fc27.x86_64/jre/bin/java' '-javaagent:/home/godas/.m2/repository/org/aspectj/aspectjweaver/1.8.10/aspectjweaver-1.8.10.jar' '-Dgwt.jjs.permutationWorkerFactory=com.google.gwt.dev.ThreadedPermutationWorkerFactory' '-Dgwt.jjs.maxThreads=4' '-Djava.io.tmpdir=/home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/tmp' '-Djava.util.prefs.systemRoot=/home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/tmp' '-Djava.util.prefs.userRoot=/home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/tmp' '-Djava.util.logging.config.class=org.ovirt.engine.ui.gwtaop.JavaLoggingConfig' '-Xms1024M' '-Xmx8192M' '-Dgwt.dontPrune=org\.ovirt\.engine\.core\.(common|compat)\..*' 'com.google.gwt.dev.Compiler' '-logLevel' 'INFO' '-war' '/home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/target/generated-gwt' '-localWorkers' '4' '-failOnError' '-XfragmentCount' '-1' '-sourceLevel' 'auto' '-style' 'OBF' '-gen' '/home/godas/workspace/ovirt-engine/frontend/webadmin/modules/webadmin/gen' 'org.ovirt.engine.ui.webadmin.WebAdmin'
[ERROR] ]] failed with status 1
[ERROR] -> [Help 1]



On Wed, Mar 21, 2018 at 6:37 PM, Benny Zlotnik <bzlotnik@redhat.com> wrote:
Had this issue too (FF & Chrome), I've recompiled, ran engine-setup again and it resolved

On Wed, Mar 21, 2018 at 3:01 PM, Greg Sheremeta <gshereme@redhat.com> wrote:
That message is probably not related, and is generally harmless. Compile with  DEV_EXTRA_BUILD_FLAGS_GWT_DEFAULTS="-Dgwt.userAgent=safari,gecko1_8" to stop that message.

Does it work in firefox? Please share your ui.log from the server.

Greg

On Wed, Mar 21, 2018 at 8:55 AM, Gobinda Das <godas@redhat.com> wrote:
Hi,
UI keeps on loading and I can see below error in browser.

webadmin-0.js:422 Wed Mar 21 14:59:47 GMT+530 2018 com.google.gwt.logging.client.LogConfiguration
SEVERE: Possible problem with your *.gwt.xml module file.
The compile time user.agent value (gecko1_8) does not match the runtime user.agent value (safari).
Expect more errors.
com.google.gwt.useragent.client.UserAgentAsserter$UserAgentAssertionError: Possible problem with your *.gwt.xml module file.
The compile time user.agent value (gecko1_8) does not match the runtime user.agent value (safari).
Expect more errors.
at Unknown.L(webadmin-0.js)
at Unknown.oj(webadmin-0.js)
at Unknown.new pj(webadmin-0.js)
at Unknown.nj(webadmin-0.js)
at Unknown.nb(webadmin-0.js)
at Unknown.qb(webadmin-0.js)
at Unknown.eval(webadmin-0.js)

--
Thanks,
Gobinda

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--

GREG SHEREMETA

SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX

Red Hat NA

gshereme@redhat.com    IRC: gshereme


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Devel mailing list
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--
Thanks,
Gobinda