Could not resolve module: com.demo [3295]_ Unresolved requirement: Import-Package: com.liferay.portal.kernel.portlet.bridges.mvc; version="[1.6.0,2.0.0)"_ [Sanitized] at org.eclipse.osgi.container.Module.start(Module.java:444) in liferay 7.3

 How to resolve the below error?

Could not resolve module: com.demo [3295]_  Unresolved requirement: Import-Package: com.liferay.portal.kernel.portlet.bridges.mvc; version="[1.6.0,2.0.0)"_ [Sanitized] at org.eclipse.osgi.container.Module.start(Module.java:444) in liferay 7.3

Solution :

Please verify your gradle properties 

liferay.workspace.target.platform.version = 7.2.0

Update this to 

liferay.workspace.target.platform.version =7.3.1

Versions need to update based on your configuration.