[Solution] DataTables warning: Invalid JSON response. For more information about this error

🔥 Question

👉 DataTables warning: table id=tblTest - Invalid JSON response. For more information about this error, please see http://datatables.net/tn/1

🕵️ investigate the cause of

👉 My error says DataTables warning, but it was actually a DB problem.

👉 Check your Tomcat log! Check your Tomcat log! Check your Tomcat log~!!

DEBUG [org.springframework.web.servlet.handler.SimpleMappingExceptionResolver] Resolving exception from handler [public java.lang.String com.web.Controller.select01120(com.website.domain.01120VO,javax.servlet.http.HttpServletRequest,org.springframework.ui.ModelMap) throws java.lang.Exception]: org.springframework.dao.DataAccessResourceFailureException: 
### Error querying database.  Cause: org.postgresql.util.PSQLException: ERROR: could not open shared memory segment "/PostgreSQL.3709968000": 그런 파일이나 디렉터리가 없습니다
  Where: parallel worker

👉 The real cause : org.postgresql.util.PSQLException: ERROR: could not open shared memory segment

🧙 Solution

I am using Linux. So I used the following method.

👉 Changed the IPC value of /etc/systemd/logind.conf : yes -> no

 

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🧭 References

[1] reference : https://doctorson0309.tistory.com/

[2] Ads : https://play.google.com/store/apps/details?id=io.cordova.seoulfilter