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The exception is pretty clear: "java.io.FileNotFoundException: class path resource [WEB-INF/conf/cache/cache-config.xml] cannot be opened because it does not exist".

In my local 6.3 installation I have this file at <APPIAN_HOME>\ear\suite.ear\web.war\WEB-INF\conf\cache\cache-config.xml

I don't remember it was a part of configuration process, so it most probably should exist after you install local appian.

Try to put it , by creating from scratch cache-config.xml:

<cache-configs>
<cache-config key="" config="appian/cache/jcs-default-config.ccf" />

<!-- Caches scale by the shape of the key -->

<!-- scale by count of users -->

<!-- Username to Credentials -->
<cache-config key="groupMemberships" config="appian/cache/jcs-groupMembershipCache-config.ccf" distributed="true" />
<!-- Username and type of favorite to list of favorites -->
<cache-config key="favoritesCache" config="appian/cache/jcs-favoritesCache-config.ccf" />
<!-- Username and Size to Thumbnail ID -->
<cache-config key="userThumbnails" config="appian/cache/jcs-userThumbnailsCache-config.ccf" distributed="true"/>
<!-- Username to Image ID -->
<cache-config key="userPhotos" config="appian/cache/jcs-userPhotosCache-config.ccf" distributed="true"/>
<!-- UserPreferences stores each user's local, time zone and calendar -->
<cache-config key="userPreferences" config="appian/cache/jcs-userPreferences-config.ccf" distributed="true" />
<!-- Maps (document id based on user, document version, width, height) to cached thumbnail image -->
<cache-config key="thumbnails" config="appian/cache/jcs-thumbnailCache-config.ccf" />
<!-- Document Thumbnailable cache, used in news feed to determine if a document may be rendered as a thumbnail -->
<cache-config key="documentsThumbnailable" config="appian/cache/jcs-default-config.ccf"/>
<!-- RecordUiBuilder provides framework object for generating record user interfaces; scale by number of users -->
<cache-config key="recordUiBuilder" config="appian/cache/jcs-recordUiBuilder.ccf" />
<!-- Stateful SAIL cache, one user looking at one form at a time on average -->
<cache-config key="uiState" class="com.appiancorp.cache.sail.StatefulSailCacheImpl" config="appian/cache/jcs-uiState-config.ccf" />
<!-- Partial rendering cache, one user looking at one form at a time on average -->
<cache-config key="partialRenderCache" config="appian/cache/jcs-partialRenderCache-config.ccf" />
<!-- Images cache for SAIL -->
<cache-config key="opaqueSystemIdCache" config="appian/cache/jcs-opaqueSystemIdCache-config.ccf" distributed="true" />
<!-- Images cache for SAIL -->
<cache-config key="opaqueSystemCache" config="appian/cache/jcs-opaqueSystemCache-config.ccf" distributed="true" />
<!-- Safe URI to boolean of whether or not the safe URI is valid -->
<cache-config key="safeUriCache" config="appian/cache/jcs-safeUriCache-config.ccf" />
<!-- SAIL Cache function -->
<cache-config key="sailCacheFunction" config="appian/cache/jcs-sailCacheFunction-config.ccf" />
<!-- Decision UUID to Decision Object by Version Cache -->
<cache-config key="decisionCache" config="appian/cache/jcs-decisionCache-config.ccf" />

<!-- scale by count of groups -->

<!-- Group id to Group Name -->
<cache-config key="groupNames" config="appian/cache/jcs-groupNameCache-config.ccf" />


<!-- scale by separate web services -->

<!-- WSDL; scale by count of separate web services -->
<cache-config key="webservices.wsdlCache" config="appian/cache/jcs-wsdlCache-config.ccf" />
<!-- WebService invoker; scale by count of users invoking web services combined with the web service -->
<cache-config key="webservices.wsInvokerCache" config="appian/cache/jcs-wsInvokerCache-config.ccf" />


<!-- Located in TypeServiceJavaImpl -->

<!-- Map of internal type id to Datatype -->
<cache-config key="types.datatype" config="appian/cache/jcs-datatypeCache-config.ccf" distributed="true"/>
<!-- Map of QName to Datatype -->
<cache-config key="types.datatypeByQName" config="appian/cache/jcs-datatypeCache-config.ccf" distributed="true"/>
<!-- Map of internal type id to Datatype Instance Properties -->
<cache-config key="types.datatypeInstanceProperties" config="appian/cache/jcs-datatypeCache-config.ccf" distributed="true" />
<!-- Map of external type id to internal type id -->
<cache-config key="types.externalId" config="appian/cache/jcs-datatypeExternalIdCache-config.ccf" distributed="true"/>
<!-- Map of internal type id to DatatypeProperties -->
<cache-config key="types.datatypeProperties" config="appian/cache/jcs-datatypeCache-config.ccf" distributed="true"/>
<!-- Map of QName to the datatype id for the latest version with that QName, whether active or deactivated. -->
<cache-config key="types.lastVersion" config="appian/cache/jcs-datatypeLastVersionCache-config.ccf" distributed="true"/>
<!-- Map of datatype id to the latest version datatype with the same original QName, whether active or deactivated. -->
<cache-config key="types.lastVersionById" config="appian/cache/jcs-datatypeLastVersionByIdCache-config.ccf" distributed="true"/>

<!-- Located in core.Type -->

<!-- Map of type id to non-system core Types-->
<cache-config key="types.core.nonSystemTypes" config="appian/cache/jcs-datatypeCache-config.ccf" distributed="true"/>


<!-- Located in DatatypeModelRepositoryImpl -->

<!-- Map of Set of type ids to EPackage -->
<cache-config key="types.datatypeEcore" config="appian/cache/jcs-datatypeEcoreCache-config.ccf"/>
<!-- Map of internal type id to cache keys -->
<cache-config key="types.datatypeEcoreIds" config="appian/cache/jcs-datatypeEcoreIdsCache-config.ccf" distributed="true"/>


<!-- scale by active application rules -->

<!-- This cache stores all rules (e.g., expression rules, interface rules, and query rules) and constants; scale by count of rules. -->
<cache-config key="local_repository" config="appian/cache/jcs-local-repository.ccf" distributed="true"/>


<!-- scale tiny -->

<!-- Map of RecordType Source UUID to Key Type -->
<cache-config key="recordKeyTypeBySourceUuid" config="appian/cache/jcs-recordKeyTypeBySourceUuidCache-config.ccf" distributed="true" />
<!-- Map of RecordType UUID to ID -->
<cache-config key="recordTypeIdByUuid" config="appian/cache/jcs-recordTypeIdByUuidCache-config.ccf" distributed="true" />
<!-- Map of system Content UUID to ID -->
<cache-config key="idByUuid" config="appian/cache/jcs-idByUuidCache-config.ccf" />
<!-- Only one entry, the site locale settings -->
<cache-config key="i18n" config="appian/cache/jcs-i18n-config.ccf" />
<!-- Only one entry, "preferencesObject" -->
<cache-config key="applications" config="appian/cache/jcs-applications-config.ccf" />
<!-- Only one entry, map of <String username, Integer messageCount> -->
<cache-config key="forumsMessageCounts" config="appian/cache/jcs-forums-config.ccf" />
<!-- Stores just sitewide time zone settings and calendar settings (just two entries) -->
<cache-config key="globalization" config="appian/cache/jcs-globalization-config.ccf" distributed="true" />
<!-- Admin Console -->
<cache-config key="administeredConfiguration" config="appian/cache/jcs-administration-config.ccf" distributed="true" />
<!-- Certificates -->
<cache-config key="certificate.cache" config="appian/cache/jcs-certificateCache-config.ccf" distributed="true"/>

<cache-config key="partialEvalCache" config="appian/cache/jcs-partialEvalCache-config.ccf" />

<!-- Sites Caching -->
<cache-config key="sitesTemplateCache" config="appian/cache/jcs-sitesTemplateCache-config.ccf" distributed="true"/>

<!-- DataSource Caching -->
<cache-config key="dataSourceCache" config="appian/cache/jcs-dataSourceCache-config.ccf" distributed="true"/>

<!-- Design Object Locking Caching -->
<cache-config key="designObjectLocking" config="appian/cache/jcs-designObjectLockCache-config.ccf" distributed="true"/>
</cache-configs>

yep it was the first thing that I checked. The file is definitely there.

are you suggesting I replace the existing file with the above ?

Try run again the configure script and deploy the appian to both. Maybe you did some modification after you deployed it.