I got this error while trying to look up an IP's contribs.

( ! ) Warning: PDOStatement::execute(): MySQL server has gone away in /mnt/nfs/labstore-secondary-tools-project/guc/labs-tools-guc/src/Main.php on line 288
Call Stack
# Time Memory Function Location
1 0.0001 399112 {main}( ) .../index.php:0
2 0.0010 517840 Guc\Main->__construct( ) .../index.php:43
3 0.0452 1503104 Guc\Main->reduceWikis( ) .../Main.php:75
4 0.0452 1503424 Guc\Main->doBigUnionReduce( ) .../Main.php:228
5 0.0574 2590112 execute ( ) .../Main.php:288

( ! ) Warning: PDOStatement::execute(): Error reading result set's header in /mnt/nfs/labstore-secondary-tools-project/guc/labs-tools-guc/src/Main.php on line 288
Call Stack
# Time Memory Function Location
1 0.0001 399112 {main}( ) .../index.php:0
2 0.0010 517840 Guc\Main->__construct( ) .../index.php:43
3 0.0452 1503104 Guc\Main->reduceWikis( ) .../Main.php:75
4 0.0452 1503424 Guc\Main->doBigUnionReduce( ) .../Main.php:228
5 0.0574 2590112 execute ( ) .../Main.php:288