Tree bark removed or possibly girdled. HELP…!

[Sawarbor]

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[Sawarbor]

Hi all,

I have a tree out front near a street. About 2 years back I noticed quite a bit of bark missing. The bark was nowhere to be found…. I waited a few months then added pruning spray in the missing bark area.

Any idea how this can happen? Will this tree be okay? Wanted to ask here, to get an opinion from an individual with more experience. Please view the images im the previous post.