visual studio code java file not refreshing

Message: Solution cannot be resolved to a type code: 16777218 resource: C:/data/devgithub/_my-projects/learning-computer-science/src/EducativeIo/Courses/GrokkingTheCodingInterview/Ch12_ModifiedBinarySearch/P2_CeilingOfANumber/Java/SolutionTest.java line: 21 Message: Solution cannot be resolved to a type code: 16777218 resource: C:/data/devgithub/_my-projects/learning-computer-science/src/EducativeIo/Courses/GrokkingTheCodingInterview/Ch12_ModifiedBinarySearch/P2_CeilingOfANumber/Java/SolutionTest.java line: 16

Message: Solution cannot be resolved to a type code: 16777218 resource: C:/data/devgithub/_my-projects/learning-computer-science/src/EducativeIo/Courses/GrokkingTheCodingInterview/Ch12_ModifiedBinarySearch/P2_CeilingOfANumber/Java/SolutionTest.java line: 12 The project may be inconsistent, if so try refreshing this project and building it code: 0 resource: C:/data/devgithub/_my-projects/learning-computer-science/src/EducativeIo/Courses/GrokkingTheCodingInterview/Ch12_ModifiedBinarySearch/P2_CeilingOfANumber/Java/Solution.java !MESSAGE Error occured while building workspace.

Visual studio code java file not refreshing