Installation Error (IONOS UK)

ERROR: CREATE_CLIENT:RuntimeException: Parse error reading JWS in /homepages/23/d807826200/htdocs/app812018546/wp-content/plugins/wp-letsencrypt-ssl/lib/LEConnector.php:188
Stack trace:
#0 /homepages/23/d807826200/htdocs/app812018546/wp-content/plugins/wp-letsencrypt-ssl/lib/LEConnector.php(227): WPLEClient\WPLEConnector->request(‘POST’, ‘https://acme-v0…’, ‘{“protected”:”e…’)
#1 /homepages/23/d807826200/htdocs/app812018546/wp-content/plugins/wp-letsencrypt-ssl/lib/LEAccount.php(99): WPLEClient\WPLEConnector->post(‘https://acme-v0…’, ‘{“protected”:”e…’)
#2 /homepages/23/d807826200/htdocs/app812018546/wp-content/plugins/wp-letsencrypt-ssl/lib/LEAccount.php(73): WPLEClient\LEAccount->createLEAccount(‘hallo@mybeautyk…’)
#3 /homepages/23/d807826200/htdocs/app812018546/wp-content/plugins/wp-letsencrypt-ssl/lib/LEClient.php(141): WPLEClient\LEAccount->__construct(Object(WPLEClient\WPLEConnector), 1, ‘hallo@mybeautyk…’, Array)
#4 /homepages/23/d807826200/htdocs/app812018546/wp-content/plugins/wp-letsencrypt-ssl/classes/le-core.php(101): WPLEClient\WPLEClient->__construct(‘hallo@mybeautyk…’, false, 1, ‘/homepages/23/d…’)
#5 /homepages/23/d807826200/htdocs/app812018546/wp-content/plugins/wp-letsencrypt-ssl/classes/le-core.php(79): WPLE_Core->wple_create_client()
#6 /homepages/23/d807826200/htdocs/app812018546/wp-content/plugins/wp-letsencrypt-ssl/classes/le-core.php(64): WPLE_Core->wple_generate_verify_ssl()
#7 /homepages/23/d807826200/htdocs/app812018546/wp-content/plugins/wp-letsencrypt-ssl/admin/le_admin.php(366): WPLE_Core->__construct(Array)
#8 /homepages/23/d807826200/htdocs/app812018546/wp-includes/class-wp-hook.php(288): WPLE_Admin->wple_save_email_generate_certs(”)
#9 /homepages/23/d807826200/htdocs/app812018546/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array)
#10 /homepages/23/d807826200/htdocs/app812018546/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#11 /homepages/23/d807826200/htdocs/app812018546/wp-admin/admin.php(170): do_action(‘admin_init’)
#12 {main}

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