2019-02-26T19:30:03.205625Z 21485 [Note] Got an error reading communication packets
2019-02-26T19:30:11.498243Z 21487 [Warning] InnoDB: Cannot add field `lightbox_description_font_weight` in table `radio7g_wp877`.`wp_bwg_theme` because after
adding it, the row size is 8144 which is greater than maximum allowed size (8126) for a record on index leaf page.
2019-02-26T19:30:11.770397Z 21487 [ERROR] InnoDB: Operating system error number 13 in a file operation.
2019-02-26T19:30:11.770435Z 21487 [ERROR] InnoDB: The error means mysqld does not have the access rights to the directory.
2019-02-26 16:30:11 0x7f48cd034700 InnoDB: Assertion failure in thread 139950653916928 in file fil0fil.cc line 898
InnoDB: Failing assertion: success
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to http://bugs.mysql.com.
InnoDB: If you get repeated assertion failures or crashes, even
InnoDB: immediately after the mysqld startup, there may be
InnoDB: corruption in the InnoDB tablespace. Please refer to
InnoDB: about forcing recovery.
19:30:11 UTC - mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
Attempting to collect some information that could help diagnose the problem.
As this is a crash and something is definitely wrong, the information
collection process might fail.