Error: Incorrect DATE value: '23:45: 30'

An error message appears again.

n your MySQL database, the table cpi7c_jem_config is missing because it was deleted. The intended action was to empty (truncate) the table, not to delete it.

Now, you must create first this table to fix this, in your myphpadmin, go the sql tab, and run this code:

CREATE TABLE `cpi7c_jem_config` (
`keyname` varchar(100) NOT NULL,
`value` text DEFAULT NULL,
`access` int(10) UNSIGNED NOT NULL DEFAULT 0 COMMENT 'rfu'
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

After that, run the INSERT to populate the default settings:

INSERT INTO `cpi7c_jem_config` (`keyname`, `value`, `access`) VALUES
('oldevent', '2', 0),
('minus', '1', 0),
('showtime', '1', 0),
('showtitle', '1', 0),
('showlocate', '1', 0),
('showcity', '1', 0),
('tablewidth', '', 0),
('datewidth', '20%', 0),
...

Copy this complete INSERT statement from the SQL file inside the zip file.