Viewer does not work after Docs 2.0.2 upgrade

Hi,

we upgraded one CNX7 system from Docs 2.0 to 2.0.2 without any issues except that Viewer and thumbnail generation does not work. (Editing in Docs works fine.)

This is what I can see in Viewer's SystemOut.log:

[12/28/22 9:08:29:265 CET] 00000149 RepositoryCom E   adapter initialization failed java.lang.IllegalStateException: Illegal URL string when perform initialization of class LCFilesCMISRepository 
....


[12/28/22 10:17:41:086 CET] 0000015a NewsEventServ E CLFAF400W: Can't access the document repository.
[12/28/22 10:17:43:710 CET] 00000171 SessionUserFi I Got request /viewer/api/entitlement
[12/28/22 10:17:44:504 CET] 00000171 SessionUserFi I Got request /viewer/api/entitlement
[12/28/22 10:17:44:908 CET] 00000171 SessionUserFi I Got request /viewer/app/lcfiles/c2fcb5e2-be87-4a24-af1f-24f321f5bb7a/content
[12/28/22 10:17:44:910 CET] 00000171 ViewDocServle W Request on HCL Docs Component : request DBrsQ+Z6t3RlSojPIxL37HRkgXghkSEAImo1KBKLnhjptHx4x/IPIevXmWWjxEW8 with information {IRepositoryAdapter is null caused by repoId is not correct!}
[12/28/22 10:17:48:916 CET] 00000171 SessionUserFi I Got request /viewer/api/version
[12/28/22 10:17:57:278 CET] 00000171 SessionUserFi I Got request /viewer/upload/lcfiles/468dd920-9696-4ed5-a015-e3bef081fa8a
[12/28/22 10:17:57:280 CET] 00000171 LotusConnecti I Trusted S2S call in On-premise onbehalf of 63A0981A-377B-6A03-C125-7D34003FBE2A with s2sToken. /viewer/upload/lcfiles/468dd920-9696-4ed5-a015-e3bef081fa8b
[12/28/22 10:17:57:281 CET] 00000171 LotusConnecti I Found the user 63A0981A-377B-6A03-C125-7D34003FBE2A by directory service according to s2s call user id

Docs and Conversion server logs are clean. I double checked all cfg.properties and cfg.node.properties install files as well as all json files in IBMDocs-config and there is nothing suspicious. Any idea what else to check?

Fixed via HCL support. The problem was that for an unknown reason, two parameters in viewer-config.json were blank although they were set in Viewer/config.properties during upgrade:

files_url=
ic_admin_j2c_alias=