The website constantly give 502 error whenever tries to edit any product or upload a product

error: Lock tables although only a single query is running

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Next error:

When i check Nginx access logs & opens a page from backend most of the time I see session/unlogin request there & actual request never logging in & web page throws a 502 error.

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Server Details :

  • Google kubernestes engine (load balancer ingress)
  • Nginx
  • Mysql (google cloud sql)
  • i wonder what motivates people when they decide to change the default admin path. but for your issue - please check error log. not access log.
    – MagenX
    Jun 19, 2019 at 20:09

1 Answer 1


Its a 502 error. Which means a Bad Gateway. Please check your error and system log. You can find many logs at <yourmagentowebsite>/var/log folder. Also check your server log.

  • Nothing gets recorded in any of the files in /var/log. Checked the logging as well & it's on Jun 20, 2019 at 9:17

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