Please help.Why i can't print the messenger in the output log? thank you

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1

Could you please help to check for my code? Because i can’t print the messenger in the output log.
Thanks so much.

  1. Tank cpp
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    image991×693 40.7 KB

2.Tank header

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image1008×655 34.6 KB

  1. Output log.
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    image1381×1088 190 KB
2

i already fixed my problem. thank you.