Whenever JS Jobs Manager 1.1.3 is enabled on my wordpress site i get the following security warnings in the wordpress security page/
As soon as the JS Jobs Manager plugin is disabled , all the below errors dissapear 

Site Health Status
The site health check shows critical information about your WordPress configuration and items that require your attention.
3 critical issues
An active PHP session was detected
Performance
A PHP session was created by a session_start() function call. This interferes with REST API and loopback requests. The session should be closed by session_write_close() before making any HTTP requests.

The REST API encountered an error
The REST API is one way WordPress, and other applications, communicate with the server. One example is the block editor screen, which relies on this to display, and save, your posts and pages.
The REST API request failed due to an error.

Error: cURL error 28: Operation timed out after 10001 milliseconds with 0 bytes received (http_request_failed)
Your site could not complete a loopback requestPerformanceLoopback requests are used to run scheduled events, and are also used by the built-in editors for themes and plugins to verify code stability.
The loopback request to your site failed, this means features relying on them are not currently working as expected.
Error: cURL error 28: Operation timed out after 10001 milliseconds with 0 bytes received (http_request_failed)

They have fixed this bug in 1.1.4 I think..