Petra package trouble shooting E7 error what is the problem

Just
video about the new technician who is coming new our field just I try to a little information share with new technician I hope you

[@mohdsalman1919]

Very nice sir

[@coolingpoints8898]

Thank you

[@koiansreact7843]

Very helpful video 👍

[@coolingpoints8898]

Thank you

[@Sureshsuresh-bu3qs]

Bay 9 error naiyarake kiya problem

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Company name

[@Sureshsuresh-bu3qs]

@@coolingpoints8898 petra