Iam assuming that the variable m has been defined in your main file although it is not shown in your sample. Also, you are opening your text file inside the for loop which means that the statement will be executed on each iteration of the loop. You should open the file outside and before the loop. Asper the ggplot2 documentation, you need to provide a data.frame() or object that can be converted (coerced) to a data.frame().In this case, if you want to reproduce the plot above in ggplot2, you will need to manually set up the data frame yourself. Below is an example of how you could set up the data to display the plot in ggplot2. 3Answers. I was facing the same issue. Try this out, it looks like you are running a wrong class file. Go to Java file which contains @SpringBootApplication annotation. @SpringBootApplication public class DemoApplication { public static void main (String [] args) { args); } } I fix it. message": "The given id must not be null!; nested exception is java.lang.IllegalArgumentException: The given id must not be null!", here is my code : Repository @SuppressWarnings("unused") @Repository public interface UserRepository extends JpaRepository { } Service Hemust not be a new convert, or he might become conceited and incur the same condemnation as the devil. Holman Christian Standard Bible He must not be a new convert, or he might become conceited and fall into the condemnation of the Devil. American Standard Version not a novice, lest being puffed up he fall into the condemnation of the devil. individualline must be more precisely rendered. Tip! Larger fonts make for easier reading. 600-1000 dpi Must be legible when viewed as an 80 mm or 1800 pixel width, unmagnified. Images: Though many web-based images often appear at very low resolutions (72 dpi or lower), readers will only benefit from your research if your images offer Thenhe added, Wist ye not that I must be about my Father's business? There was an expression of Mary's which evidently distressed the Child Jesus. Godet even thinks that he discerns a kind of shudder in his quick reply to Mary's "thy father and I have sought thee sorrowing." "In my Father's house, where my Father's work is being done, there Youopened in w mode, so you can't read it. Also, w mode empties the file, so there's nothing to read. If you want to read and write it, use r+ mode. Don't forget to truncate it after writing. - Barmar Notsure on what exactly is your requirement so please modify accordingly If none of this is what you're looking, please elaborate on your exact requirement Please Mark This As Answer if it solved your issue Please Vote This As Helpful if it helps to solve your issue Visakh ---------------------------- My Wiki User Page My MSDN Page My Personal 1Source: Eloquent JavaScript: A Modern Introduction to Programming, 2nd Edition by Marijn Haverbeke Example: Variable names can be any word that isn't reserved as a keyword (such as var ). They may not include spaces. Digits can also be part of variable names— catch22 is a valid name, for example—but the name must not start with a digit. ySNA.