i had this error msg "TypeError: Cannot read property 'push' of undefined" i use a serial in to use it with a dropdown but nothings works good iwas blocked with this erorr
exemple of datat:
{"payload":"CE3PRO~4.GCO 4946323\r\n","port":"COM7","_msgid":"427cf766.654478"}
{"payload":"CE26C6~1.GCO 1305369\r\n","port":"COM7","_msgid":"7adfe1f3.b5ae3"}
{"payload":"CE3PRO~1.GCO 7003983\r\n","port":"COM7","_msgid":"831a838d.2e498"}
[{"id":"d88d7327.df59c","type":"serial in","z":"236861.38a5b7a","name":"","serial":"d47dab87.de9298","x":50,"y":880,"wires":[["61b2e6f8.f68a88","34592559.b9a7ea"]]},{"id":"43ddb09d.4c403","type":"ui_button","z":"236861.38a5b7a","name":"","group":"fbe44ce1.d7606","order":1,"width":0,"height":0,"passthru":false,"label":"Initialiser la carte SD","tooltip":"","color":"Black","bgcolor":"pink","icon":"fa-list-ul","payload":"","payloadType":"str","topic":"topic","topicType":"msg","x":940,"y":1040,"wires":[["19ccd971.831897","f4ccbc70.4d08b"]]},{"id":"19ccd971.831897","type":"function","z":"236861.38a5b7a","name":"tf","func":"msg.payload = \"M21\\n\";\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":1170,"y":1040,"wires":[["e3810c43.3e236","111554ab.20ee6b"]]},{"id":"74c5d1a5.8fb54","type":"ui_dropdown","z":"236861.38a5b7a","name":"","label":"list","tooltip":"","place":"Select option","group":"fbe44ce1.d7606","order":2,"width":0,"height":0,"passthru":true,"multiple":false,"options":[{"label":"","value":"","type":"str"}],"payload":"","topic":"topic","topicType":"msg","x":910,"y":1120,"wires":[["94fa3166.8a55c"]]},{"id":"e3810c43.3e236","type":"delay","z":"236861.38a5b7a","name":"","pauseType":"delay","timeout":"1","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":1340,"y":1040,"wires":[["89738db8.c4179"]]},{"id":"89738db8.c4179","type":"function","z":"236861.38a5b7a","name":"","func":"flow.set =(\"recevoirSignal\",1)\nmsg.payload = \"M20\\n\";\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":1500,"y":1040,"wires":[["111554ab.20ee6b"]]},{"id":"34592559.b9a7ea","type":"switch","z":"236861.38a5b7a","name":"","property":"payload","propertyType":"msg","rules":[{"t":"cont","v":".GCO","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":170,"y":1120,"wires":[["f6fc16db.338368","65267da.3d97d84"]]},{"id":"94fa3166.8a55c","type":"function","z":"236861.38a5b7a","name":"fichierChoisi","func":"flow.set =(\"fichierChoisi\",msg.payload);","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":1330,"y":1120,"wires":[[]]},{"id":"65267da.3d97d84","type":"debug","z":"236861.38a5b7a","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":510,"y":1040,"wires":[]},{"id":"f6fc16db.338368","type":"function","z":"236861.38a5b7a","name":"append list ","func":"fichiers=[];\nfichiers = flow.get(\"fichiers\");\nmsg.options.push(msg.payload);\nmsg.options = fichiers;\nflow.set(\"fichiers\",fichiers);\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":470,"y":1120,"wires":[["74c5d1a5.8fb54"]]},{"id":"f4ccbc70.4d08b","type":"function","z":"236861.38a5b7a","name":"raz de list","func":"flow.set=(\"fichiers\",[\"Select Option\"]);\n msg.options = [\"derfghj\"];\n return msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":1180,"y":1080,"wires":[["74c5d1a5.8fb54"]]},{"id":"d47dab87.de9298","type":"serial-port","serialport":"COM7","serialbaud":"115200","databits":"8","parity":"none","stopbits":"1","waitfor":"","dtr":"none","rts":"none","cts":"none","dsr":"none","newline":"\\n","bin":"false","out":"char","addchar":"","responsetimeout":"10000"},{"id":"fbe44ce1.d7606","type":"ui_group","name":"Impression","tab":"871a5df8.1826a","order":2,"disp":true,"width":"8","collapse":false},{"id":"871a5df8.1826a","type":"ui_tab","name":"Controle","icon":"fa-cog","disabled":false,"hidden":false}]