is there anybody who succeed in building release mode in bolt 0.4.3.19?

When I import bolt_release.unitypackage with instruction on the page (https://doc.photonengine.com/en/bolt/current/setup/upgrading)
, some error messages appear. The error messages indicate that BoltPrefabs can not be found. (error : BoltPrefabs does not contain a definition for ...)
However I can run my project with debug bolt with the same condition.

Please help me.