CIO: what kind of web server do you want for your dev environment? WordPress?
Me: Uhm, Linux centos running apa-
CIO: whoa that's dangerous you need to think of the people who are going to support this.
Me: right...
CIO: we're going to pick something and stick with it.

FML company is just starting to do in house dev. CIO is heavily involved and knows more than I do... My life is a Dilbert comic strip

Job interview..
Interviewer: gave me a question
Me: (took 40 mins to solve it)
Interviewer: Ok. 2nd question... Asks the ques..
Me: (relieved that 1st ques got over) Took some time 5 mins to come up with solution..
Interviewer: ok. 3rd question..
Me: ( feeling so happy that I solved 2 questions and reached the 3rd question)
Interviewer: Let's go back to first question and tell me a scenario that will fail in ur logic..( yes this is the 3rd question)
Me: Damnnn.. My heart stopped.. It took me 40 mins to figure out the logic that worked with different inputs I tried n now, I have to find some scenario that won't work...

Not a rant, a question.

So I am planning to build an ecommerce website for my business, is it sensible to make it from scratch and if not then what existing solutions I can use

Urghhhhhgg, really confused

PS: sorry the the question is too generic and with very broad boundaries.
PPS: Pls don't mention integration problems?

Ques: I wish to know what kind of software related problems do you devs face/faced in your work,

Say like you were working in version 9.2 postgre and in the end you realised it had to be 9.6 and get doomed or like the bot deployed created it's own error?

PPPS: It would be lovely if you could classify in what category or stage of pipeline does it belong to.

Thanks!!☺️