random client errors

[Mancubus 8]

Error: client.j() r.v() | client.j r.v df.e bu.av client.hn client.fr client.aw aa.s aa.run java.lang.Thread.run | java.lang.NullPointerException | 916 901 2003
Error: bu.av() | bu.av client.hn client.fr client.aw aa.s aa.run java.lang.Thread.run | java.lang.NullPointerException | 38,81,64,2,3163,3487,36,2,

Im wondering what causes these kind of errors, sometimes random things will stop working with my script until I restart the client. And these kind of errors show up in the log when that happens

[azx000 6]

Same,Run the script for a long time, found that the script the mouse trajectory are getting slower and slower, no response until the window. The following is my Settings and track record.http://m.qpic.cn/psc?/V10TZ8Im4BFtl9/Sc7wZG8Q0BUeMz.O80ebfCCBxK4L9eqo8hkNTKJPj40cX6SJFSIG.yl8*tt5nMfC21*1CsCPUT.YuyiVp*vhebz7mn8xfjMTfsu*mqZNEgU!/b&bo=WAKkAQAAAAABF88!&rf=viewer_4

http://m.qpic.cn/psc?/V10TZ8Im4BFtl9/Sc7wZG8Q0BUeMz.O80ebfIASTeQvSEz8cnLL3JexqJkAB3uYT4u5Re9utdzXpdbkE.HTw*SjfwjTVkSiaIf3Roy2xEX*mokvEbg.weAyzjg!/b&bo=igKpAQAAAAADFxI!&rf=viewer_4

 

[Pandemic 2854]

That's a game error, usually caused by running out of available memory. This usually happens because of a memory leak (most likely in the script used), you can confirm this by giving the client more RAM and seeing if it lasts longer before the game crashes again.

[Mancubus 8]

Then it's probably a memory leak in my script. Could you explain how I can find this in my code and fix it? I wrote the script myself but it was my understanding that Javas automatic garbage collection took care of that