Steps to replicate the issue (include links if applicable):

• be one of these users:
  • @valerio.bozzolan
  • ...
• visit one of these Tasks:
  • T222458
• click on Award a Token
• select a Token (for example a thumb up 👍)

What happened?:

Unhandled exception:

No such token ""!

What should have happened instead?:

Assign that token.

Notes

That exception seems to be thrown from PhabricatorTokenGivenEditor#validateToken( $token_phid ). The error message is built in this way:

throw new Exception(pht('No such token "%s"!', $token_phid));

So it seems the $token_phid is just somehow passed as empty.

The function validateToken() is probably called by addToken( $object_phid, $token_phid ) in the same class, so any bug is probably not there too since the function just passes $token_phid as-is.

So probably the error is here:

PhabricatorTokenGiveController#handleRequest( AphrontRequest $request )

Probably the bug is there since it's calling addToken() obtaining the token from $request->getStr('tokenPHID').

Now, the question is, why $request->getStr('tokenPHID') was empty?

It seems we will never know the bug, since I tried later and it worked.

Feel free to mark as wontfix if it's too weird as bug report.