I can not install plugin "Comala Workflows for Scroll Versions"

[Marat]

Hi.

I'm trying to install plugin Comala Workflows for Scroll Versions v.3.11.4 and get an error: 
"An error occurred during installation. Refer to the logs for more information."

In atlassian-confluence.log:

2019-02-05 12:39:57,477 ERROR [UpmAsynchronousTaskManager:thread-2] [upm.core.install.ObrPluginInstallHandler] logUnsatisfiedRequirements OBR resolver has 5 unsatisfied requirements for installing plugin_290116048839085402_scroll-versions-comala-workflows-integration-3.11.4 (5).obr
 -- url: /rest/plugins/1.0/ | referer: localhost:8090/plugins/servlet/upm/manage/all | traceId: 40b672c8de42027e | userName: MURTAZINMS
2019-02-05 12:39:57,477 ERROR [UpmAsynchronousTaskManager:thread-2] [upm.core.install.ObrPluginInstallHandler] logUnsatisfiedRequirements Unsatisfied requirement: (&(package=com.comalatech.workflow.template))
 -- url: /rest/plugins/1.0/ | referer: localhost:8090/plugins/servlet/upm/manage/all | traceId: 40b672c8de42027e | userName: MURTAZINMS
2019-02-05 12:39:57,477 ERROR [UpmAsynchronousTaskManager:thread-2] [upm.core.install.ObrPluginInstallHandler] logUnsatisfiedRequirements Unsatisfied requirement: (&(package=com.comalatech.workflow.event.admin))
 -- url: /rest/plugins/1.0/ | referer: localhost:8090/plugins/servlet/upm/manage/all | traceId: 40b672c8de42027e | userName: MURTAZINMS
2019-02-05 12:39:57,477 ERROR [UpmAsynchronousTaskManager:thread-2] [upm.core.install.ObrPluginInstallHandler] logUnsatisfiedRequirements Unsatisfied requirement: (&(package=com.comalatech.workflow.event))
 -- url: /rest/plugins/1.0/ | referer: localhost:8090/plugins/servlet/upm/manage/all | traceId: 40b672c8de42027e | userName: MURTAZINMS
2019-02-05 12:39:57,477 ERROR [UpmAsynchronousTaskManager:thread-2] [upm.core.install.ObrPluginInstallHandler] logUnsatisfiedRequirements Unsatisfied requirement: (&(package=com.comalatech.workflow.model))
 -- url: /rest/plugins/1.0/ | referer: localhost:8090/plugins/servlet/upm/manage/all | traceId: 40b672c8de42027e | userName: MURTAZINMS
2019-02-05 12:39:57,477 ERROR [UpmAsynchronousTaskManager:thread-2] [upm.core.install.ObrPluginInstallHandler] logUnsatisfiedRequirements Unsatisfied requirement: (&(package=com.comalatech.workflow))
 -- url: /rest/plugins/1.0/ | referer: localhost:8090/plugins/servlet/upm/manage/all | traceId: 40b672c8de42027e | userName: MURTAZINMS
2019-02-05 12:39:59,514 WARN [UpmAsynchronousTaskManager:thread-2] [upm.core.install.DefaultPluginInstallationService] execute Plugin installation failed: Failed to resolve plugin dependencies within OBR [plugin_290116048839085402_scroll-versions-comala-workflows-integration-3.11.4 (5).obr]. Please see the logs for more detailed information.
 -- url: /rest/plugins/1.0/ | referer: localhost:8090/plugins/servlet/upm/manage/all | traceId: 40b672c8de42027e | userName: MURTAZINMS

Confluence v. 6.10 

Scroll Versions v.3.11.4

[Sloan N_ B_]

Hi Marat

Is Comala Workflows itself already installed and enabled?

Comala Workflows for Scroll Versions is an interface between Comala Workflows and Scroll Versions, both apps need to be installed first.

Cheers
Niklas