server_log.txt contains this error?

[03:51:17]  Loading plugin: streamer.dll
[03:51:17]   Failed (plugins/streamer.dll: invalid ELF header)

That means file /server.cfg contains following line

plugins streamer.dll

Keep in mind that our hosting is linux based so it should be

plugins streamer

Just make sure that streamer.so file exists

so what should i do exactly?should i delete the streamer.dll and replace it with streamer.so?

@user#382 - yes. streamer.dll is for windows hosting. Our servers are running linux.