Error when editing or adding roles after upgrade to OJS 3.5

[Yemane_Seged]

After upgrading to OJS 3.5.x, I am getting an error whenever I try to edit an existing role (User Group) or add a new role. The page fails to load and displays this error:

PKP\invitation\invitations\userRoleAssignment\helpers\UserGroupHelper::formatDate():
Argument #1 ($timestamp) must be of type string, null given,
called in /home/mueduet/journal.mu.edu.et/lib/pkp/classes/invitation/invitations/userRoleAssignment/helpers/UserGroupHelper.php on line 43

I expected the User Group form to open normally so I could update or create roles.

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Steps I took leading up to the issue

1. Logged in as Journal Manager / Admin

2. Went to Settings → Users & Roles → User Groups

3. Clicked Edit on any User Group OR clicked Add User Group

4. The error appears instead of loading the form

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What application are you using?

OJS 3.5.x (upgraded from OJS 3.x)

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Additional information

• Error appears on both adding and editing user groups.

• Other parts of the site appear to work normally.

• PHP error message:

PKP\invitation\invitations\userRoleAssignment\helpers\UserGroupHelper::formatDate():
Argument #1 ($timestamp) must be of type string, null given

[asmecher]

Hi @Yemane_Seged,

See this forum thread. We’re releasing OJS 3.5.0-2 within a couple of days, and it’ll include a fix for this issue.

Regards,
Alec Smecher
Public Knowledge Project Team

[Yemane_Seged]

Thank you @asmecher I think it is good to wait OJS 3.5.0-2.
I hope User mangment and roles, Editorial Members, and others will be considered