!Friendica Support
After the upgrade to 2023/04 my node sometimes has an Uncaught exception followed by
"MySQL server has gone away"

Do you have an idea how to fix this?

Thanks in advance.

2023-04-26T13:59:26Z worker [ERROR]: Uncaught exception in worker execution {"class":"mysqli_sql_exception","message":"Connection refused","code":2002,"file":"${FRIENDICA_ROOT}/src/Database/Database.php:189","trace":"#0 ${FRIENDICA_ROOT}/src/Database/Database.php(189): mysqli->__construct()\n#1 ${FRIENDICA_ROOT}/src/Database/Database.php(252): Friendica\\Database\\Database->connect()\n#2 ${FRIENDICA_ROOT}/src/Database/Database.php(709): Friendica\\Database\\Database->reconnect()\n#3 ${FRIENDICA_ROOT}/src/Database/Database.php(1511): Friendica\\Database\\Database->p()\n#4 ${FRIENDICA_ROOT}/src/Database/DBA.php(489): Friendica\\Database\\Database->select()\n#5 ${FRIENDICA_ROOT}/src/Worker/UpdateBlockedServers.php(38): Friendica\\Database\\DBA::select()\n#6 [internal function]: Friendica\\Worker\\UpdateBlockedServers::execute()\n#7 ${FRIENDICA_ROOT}/src/Core/Worker.php(572): call_user_func_array()\n#8 ${FRIENDICA_ROOT}/src/Core/Worker.php(386): Friendica\\Core\\Worker::execFunction()\n#9 ${FRIENDICA_ROOT}/src/Core/Worker.php(121): Friendica\\Core\\Worker::execute()\n#10 ${FRIENDICA_ROOT}/bin/worker.php(83): Friendica\\Core\\Worker::processQueue()\n#11 {main}","previous":null,"worker_id":"d4d1af9","worker_cmd":"UpdateBlockedServers"} - {"file":"Worker.php","line":577,"function":"execFunction","request-id":"64492d3a89d8e","uid":"c1e6bf","process_id":2743}

2023-04-26T13:59:26Z worker [NOTICE]: New retrial for task {"id":2975564,"created":"2023-04-26 02:50:01","old":0,"new":7,"worker_id":"d4d1af9","worker_cmd":"UpdateBlockedServers"}
 - {"file":"Worker.php","line":1364,"function":"getNextRetrial","request-id":"64492d3a89d8e","uid":"c1e6bf","process_id":2743}2023-04-26T13:59:26Z worker [ERROR]: DB Error {"code":2006,"error":"MySQL server has gone away","callstack":"DBA::update (1410), Worker::defer (578), Worker::execFunction (386), Worker::execute (121), Worker::processQueue (83)","params":"UPDATE `workerqueue` SET `retrial` = 7, `next_try` = '2023-04-26 15:51:35', `executed` = '0001-01-01 00:00:00', `pid` = 0, `priority` = 50 WHERE (`id` = 2975564)"}