Can you tell me how to fix this error.
PHP Code:
L 07/12/2015 - 16:45:15: [ENGINE] Entity out of range (-1)
L 07/12/2015 - 16:45:15: [AMXX] Displaying debug trace (plugin "invis.amxx", version "2.0")
L 07/12/2015 - 16:45:15: [AMXX] Run time error 10: native error (native "find_ent_by_class")
L 07/12/2015 - 16:45:15: [AMXX] [0] invis.sma::plugin_cfg (line 32)