galaxy s3 gt-i9300 twrp bootloop

[AC Question]

hello everyone,
I am a complete novice with android os.Recently I have bought a galaxy s3.I had rooted it using ODIN and installed TWRP custom recovery via the RASHR app.After installation of twrp,everytime I reboot my phone it directly boots into TWRP.I cant get back to my stock.Is there any solution to this problem?

Thanks