[Outreachy Task Submission] Grammatical Error and Capitalization Error in the error message when adding a new post

[mo-gbolahan]

the error message when adding a new post is "Failed to create a post. please recheck the your input"

Grammatical error: "please recheck the your input." The word "the" before "your input" is redundant and should be removed for correct grammar. The correct form should be: "please recheck your input."
Capitalization error: The please in the statement should start in capital letter 'P'.