Hello Oki, The error described by string ”2013, 'Lost connection to MySQL server during query'” is typical of network issues. It is described more in detail on the "B.5.2.3 Lost connection to MySQL server" documentation page <https://dev.mysql.com/doc/refman/5.7/en/error-lost-connection.html> for MySQL, where possible remedies are listed as well. A significant passage is: "Usually it indicates network connectivity trouble and you should check the condition of your network if this error occurs frequently. If the error message includes “during query,” this is probably the case you are experiencing."
Does the error occur again when you move to a different place and connect to the Internet through a different network? -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/6fc46b84-1eed-4176-9b12-a86bb35f7917%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
