XF\Db\Exception: Too many connections

I'm currently experiencing these errors, would anybody know why they're suddenly happening?

Code:

XF\Db\Exception: Too many connections src/XF/Db/Mysqli/Adapter.php:165
Generated by: Unknown account Nov 14, 2023 at 7:51 AM

Code:

Stack trace
#0 src/XF/Db/Mysqli/Adapter.php(28): XF\Db\Mysqli\Adapter->makeConnection(Array)
#1 src/XF/Db/AbstractAdapter.php(62): XF\Db\Mysqli\Adapter->getConnection()
#2 src/XF/Db/Mysqli/Adapter.php(113): XF\Db\AbstractAdapter->connect()
#3...

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