error appears when i add anything in my controller - grails

Question

i'm using Grails 2.5.1 on Windows 7 64 bit , After generating the controllers and the views using Grails command
generate-all "*"
When i add any new lines in my controllers i get the below error :
Compilation error: startup failed:
E:\Development\eclipse\TekDays\grails- app\controllers\com\tekdays\TekEventController.groovy:47: Ambiguous expression could be a parameterless closure expression, an isolated open code block, or it may continue a previous statement;solution: Add an explicit parameter list, e.g. {it -> ...}, or force it to be treated as an open block by giving it a label, e.g. L:{...}, and also either remove the previous newline, or add an explicit semicolon ';' # line 47, column 4.
{
^
1 error
here is my controller :
package com.tekdays
import static org.springframework.http.HttpStatus.*
#Transactional(readOnly = true)
class TekEventController
{
def taskService // this what i added
static allowedMethods = [save: "POST", update: "PUT", delete: "DELETE"]
def index(Integer max)
{
params.max = Math.min(max ?: 10, 100)
respond TekEvent.list(params), model:[tekEventInstanceCount: TekEvent.count()]
}
def show(TekEvent tekEventInstance)
{
respond tekEventInstance
}
def create()
{
respond new TekEvent(params)
}
#Transactional
def save(TekEvent tekEventInstance)
{
if (tekEventInstance == null)
{
notFound()
return
}
if (tekEventInstance.hasErrors())
{
respond tekEventInstance.errors, view:'create'
return
}
tekEventInstance.save flush:true
taskService.addDefaultTasks(tekEventInstance) // this what i added
request.withFormat
{
form multipartForm
{
flash.message = message(code: 'default.created.message', args: [message(code: 'tekEvent.label', default: 'TekEvent'), tekEventInstance.id])
redirect tekEventInstance
}
'*' { respond tekEventInstance, [status: CREATED] }
}
}
def edit(TekEvent tekEventInstance)
{
respond tekEventInstance
}
#Transactional
def update(TekEvent tekEventInstance)
{
if (tekEventInstance == null)
{
notFound()
return
}
if (tekEventInstance.hasErrors())
{
respond tekEventInstance.errors, view:'edit'
return
}
tekEventInstance.save flush:true
request.withFormat
{
form multipartForm
{
flash.message = message(code: 'default.updated.message', args: [message(code: 'TekEvent.label', default: 'TekEvent'), tekEventInstance.id])
redirect tekEventInstance
}
'*'
{
respond tekEventInstance, [status: OK]
}
}
}
#Transactional
def delete(TekEvent tekEventInstance)
{
if (tekEventInstance == null)
{
notFound()
return
}
tekEventInstance.delete flush:true
request.withFormat
{
form multipartForm
{
flash.message = message(code: 'default.deleted.message', args: [message(code: 'TekEvent.label', default: 'TekEvent'), tekEventInstance.id])
redirect action:"index", method:"GET"
}
'*'
{
render status: NO_CONTENT
}
}
}
protected void notFound()
{
request.withFormat
{
form multipartForm
{
flash.message = message(code: 'default.not.found.message', args: [message(code: 'tekEvent.label', default: 'TekEvent'), params.id])
redirect action: "index", method: "GET"
}
'*'
{
render status: NOT_FOUND
}
}
}
}
Any advice to solve this error ?
Thanks