PackagingResults: Error: Launch failed! Unknown Error

whenever i try to launch my game i get a error, PackagingResults: Error: Launch failed! Unknown Error. i dont know why and iv been looking all over the web for answers. i disabled a webez pluggin that i had and never used but other than that i dont tnow what else to do. Please help

Hello RbotZeref,

There are many potential reasons for a launch error - have you checked your output log for any errors? If you can boil it down to the specific errors and post those it would help us help you!

PlayLevel: ERROR: Tools.DotNETCommon.JsonParseException: Unable to parse I:\Documents\Unreal Projects\tests\tests.uproject: Could not find token at index 148

LogPlayLevel: BUILD FAILED

PackagingResults: Error: Launch failed! Unknown Error

LogPlayLevel: AutomationTool exiting with ExitCode=1 (Error_Unknown)

these are the only errors i can see