Starting at 21.06 version of Web Service we found that using maps that have children with links to cameras from more than one server can trigger this behavior.
Example:
If cycling through your list of maps the screens would not load and produce a black image. Sometimes the screens would load but would only show a few cameras.
Workaround is optional:
A possible workaround for the customer could be to decouple their maps based on server, so only have cameras / devices from one server per map, and possibly even make sure they are top level maps with no children.
To Correct this we can use the following builds. We will need to transfer these for the time to the customer server and then run the installer.
https://artifactory.exacq.org/artifactory/webservice-local/21.09.x/31982xx/3198203/
exacqVisionWebService_21.09.3198203.0_x64.deb
exacqVisionWebService_21.09.3198203.0_x64.exe
exacqVisionWebService_21.09.3198203.0_x86.deb
exacqVisionWebService_21.09.3198203.0_x86.exe
NOTE*
These versions have not been merged yet so it’s not in Release as of yet.
This fix scheduled for the March 2022 release.