Run time error 19: "File or function is not found"

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Loaded log file: "server_log.txt".
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SA-MP Dedicated Server
----------------------
v0.3z, (C)2005-2014 SA-MP Team


[01:39:48] filterscripts = ""  (string)
[01:39:48] 
[01:39:48] Server Plugins
[01:39:48] --------------
[01:39:48]  Loading plugin: mysql.so
[01:39:48]   Failed (libmysqlclient_r.so.16: cannot open shared object file: No such file or directory)
[01:39:48]  Loaded 0 plugins.


[01:39:48] 
[01:39:48] Filterscripts
[01:39:48] ---------------
[01:39:48]   Loaded 0 filterscripts.


[01:39:48] Script[gamemodes/gm.amx]: Run time error 19: "File or function is not found"
[01:39:48] Number of vehicle models: 0