Error / Fout

SEARCH:  Error while evaluating SQL:
    SELECT	a.id
							   ,		to_char(a.regdat, 'DD-MM-YYYY')
							   ,		to_char(a.mutdat, 'DD-MM-YYYY')
							   ,		a.naam
							   ,		a.biografie
							   ,		a.genre_id
							   ,		a.theaconcert
							   FROM		thea.T_GEZELSCHAP a
							   WHERE	a.id =

Database error: SQL call failed.
  Error num     : 5
  VendorError1  : 936
  VendorMessage1: 
  VendorError2  : 1
  VendorMessage2: ORA-00936: missing expression

while executing
"system_error "$msg""
    (procedure "error" line 9)
    invoked from within
"error "SEARCH:  Error while evaluating SQL:\n    $sql\n\n  Database error: $vdbmsg(Message)\n  Error num     : $vdbmsg(Error)\n  VendorError1  : $vdbm..."
    (procedure "SEARCH" line 123)
    invoked from within
"SEARCH TABLE x INTO y SQL "SELECT	a.id
							   ,		to_char(a.regdat, 'DD-MM-YYYY')
							   ,		to_char(a.mutdat, 'DD-MM-YYYY')
							   ,		a.naam
	..."
    (procedure "GEZELSCHAP::render" line 5)
    invoked from within
"GEZELSCHAP::render 1407 1616 {} 3x1_gezelschap_title_metatag -1 0"
    ("eval" body line 1)
    invoked from within
"eval $str"
    (procedure "SLOT::render" line 108)
    invoked from within
"SLOT::render [SHOW menu_id] g1"
    (procedure "detail::render" line 14)
    invoked from within
"detail::render 1616"
    ("eval" body line 1)
    invoked from within
"eval $str"
    (procedure "render" line 18)
    invoked from within
"render [SHOW layout] [SHOW menu_id] [SHOW pagestatus]"
    invoked from within
"IF {[SHOW layout] != {}} {[
	INCLUDE LIBNAME [SHOW layout]
	render [SHOW layout] [SHOW menu_id] [SHOW pagestatus]

]} ELSE {[INCLUDE LIBNAME error]<b..."
    invoked from within
"EVAL $body"
    invoked from within
"INCLUDE LIBNAME peephole
"