Can't login - says need license but already have license for that domain

Hi,

The domain has been licensed for several years but today has raised an issue saying the license key is not valid.
Hi,

The domain has been licensed for several years but today has raised an issue saying the license key is not valid.

Warning: Illegal string offset 'key' in /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php on line 192 Warning: Illegal string offset 'host' in /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php on line 193 Warning: Illegal string offset 'version' in /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php on line 194 Warning: Illegal string offset 'php' in /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php on line 195 Warning: http_build_query(): Parameter 1 expected to be Array or Object. Incorrect value given in /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php on line 196 Warning: Cannot modify header information - headers already sent by (output started at /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php:192) in /home/dklein/public_html/perch/core/inc/auth.php on line 29 Warning: Cannot modify header information - headers already sent by (output started at /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php:192) in /home/dklein/public_html/perch/core/inc/auth.php on line 50 Warning: Cannot modify header information - headers already sent by (output started at /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php:192) in /home/dklein/public_html/perch/core/lib/PerchUtil.class.php on line 1212 Warning: Cannot modify header information - headers already sent by (output started at /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php:192) in /home/dklein/public_html/perch/core/lib/PerchUtil.class.php on line 1213 Warning: Cannot modify header information - headers already sent by (output started at /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php:192) in /home/dklein/public_html/perch/core/lib/PerchUtil.class.php on line 1214 Warning: Cannot modify header information - headers already sent by (output started at /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php:192) in /home/dklein/public_html/perch/core/lib/PerchUtil.class.php on line 1220 Warning: Cannot modify header information - headers already sent by (output started at /home/dklein/public_html/perch/core/lib/PerchAuthenticatedUser.class.php:192) in /home/dklein/public_html/perch/core/inc/top.php on line 17 Log in Username Kleinonline Password Sorry, your license key isn't valid for this domain. Log into your Perch account and add the followin g as your live or testing domain: kleinonline.co.uk 16/08/2018 Log in - Perch https://kleinonline.co.uk/perch/ LLoogg iinn or Reset password by edgeofmyseat.com

I am not aware of any changes to any files or permissions, please advise. Thanks Karen