Note the vote was withdrawn, not actually voted against. They're pushing this for a later date because there was no majority.

“The EU Council did not make a decision on chat control today, as the agenda item was removed due to the lack of a majority, (...)

Belgium’s draft law, (...) was instead postponed indefinitely. (...) Belgium cannot currently present a proposal that would gain a majority. In July, the Council Presidency will transfer from Belgium to Hungary, which has stated its intention to advance negotiations on chat control as part of its work program.