local user tries to access item shared by a LDAP user when LDAP server is offline

[individual-it]

1. ldap user shares with local user
2. ldap server goes offline

local user cannot access the files
response:

<?xml version="1.0" encoding="utf-8"?>
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
<s:exception>InvalidArgumentException</s:exception>
<s:message>Jail rootPath is null</s:message>
</d:error>

[ownclouders]

GitMate.io thinks possibly related issues are #205 (Transfer users local to users ldap), #51 (LDAP User A shares with LDAP User B. LDAP Server for user B leaves to be available. The permissions of the checkboxes should be disabled), #294 (Can't remove LDAP users after removing the LDAP server), #102 (Unable to see ldap users), and #176 (ownCloud shares are removed temporarily when LDAP server is not available).

[PrajwolAmatya]

With the latest fixes, the response now returns status code 404. Is that the expected behavior?
cc @DeepDiver1975

[phil-davis]

core PR owncloud/core#41059 reverted the change in core.
Now this issue is happening again like it used to.
So we have a failing test in user_ldap CI. See issue #814