Unable to open backoffice - getting 500 error with below trace

[former_member1322329]

←[m←[33mWARN [hybrisHTTP3] [XmlWebApplicationContext] Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'defaultSearchStateResolver': Unsatisfied dependency expressed through field 'solrSearchQueryEncoder'; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [de.hybris.platform.b2bcommerce.backoffice.editor.OrgUnitCustomersEditor] for bean with name 'unitCustomersEditor' defined in class path resource [ewingscustombackoffice-backoffice-spring.xml]; nested exception is java.lang.ClassNotFoundException: de.hybris.platform.b2bcommerce.backoffice.editor.OrgUnitCustomersEditor

←[m←[1;31mERROR [hybrisHTTP3] [Property] Failed to assign [label= ${labels.login.singlesignon.label}

] to <A iVIQh>

Error creating bean with name 'defaultSearchStateResolver': Unsatisfied dependency expressed through field 'solrSearchQueryEncoder'; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [de.hybris.platform.b2bcommerce.backoffice.editor.OrgUnitCustomersEditor] for bean with name 'unitCustomersEditor' defined in class path resource [ewingscustombackoffice-backoffice-spring.xml]; nested exception is java.lang.ClassNotFoundException: de.hybris.platform.b2bcommerce.backoffice.editor.OrgUnitCustomersEditor