It occurs when compiling or uploading copy-pasted code. Try,First of all, Save the file.Then, Tools–>Fix Encoding & Reload.If any hidden characters are existing it will be displayed now. Remove that and compile again. I think your problem might have been fixed.
It might be due to hidden characters in the code. Did you copy paste the code from any websites or similar pages?
It occurs when compiling or uploading copy-pasted code. Try,First of all, Save the file.Then, Tools–>Fix Encoding & Reload.If any hidden characters are existing it will be displayed now. Remove that and compile again. I think your problem might have been fixed.