Why am I getting Unknown error in line 1 of pom.xml?

Question

Getting unknown error at Line 1 in pom.xml in Eclipse IDE. It was working fine till yesterday, but all of a sudden after updating my project from master and aft

Answer 1

You must to upgrade the m2e connector. It's a known bug, but there is a solution:

1. Into Eclipse click "Help" > "Install new Software..."

2. Appears a window. In the "Install" window:

   2a. Into the input box "Work with", enter next site location and press Enter https://download.eclipse.org/m2e-wtp/releases/1.4/

   2b. Appears a lot of information into "Name" input Box. Select all the items

   2c. Click "Next" Button.

Finish the installation and restart Eclipse.