Firebase angulafire search not linking with database -


i looking list of customers whom invite has been enabled through email. following ts alert:

invitecustomer(): void { let prompt = this.alertctrl.create({   title: 'invite customer',   message: "customer invited join app.",   inputs: [     {       name: 'name',       placeholder: "your customer's name",       type: 'text'     },     {       name: 'mobile',       placeholder: "your customer's mobile number",       type: 'mobile'     },     {       name: 'email',       placeholder: "your customer's email",       type: 'email'     },   ],   buttons: [     {       text: 'cancel',       handler: data => {         console.log('cancel clicked');       }     },     {       text: 'save',       handler: data => {         this.customerprovider.invitecustomer(data.name, data.mobile, data.email,this.retailerprofile.retailerid,            this.retailerprofile.retailername).then( () => {              let loading = this.loadingctrl.create();             loading.dismiss().then(()=> {             this.customerprovider.getpendinginvitationlist();             });       }           )}        }   ] } );  prompt.present();

}

this saves data correctly problem starts when want retrieve , conduct search invitation:

getinvitation(): void { const loading = this.loadingctrl.create(); if (!this.getinvitationform.valid){   console.log(this.getinvitationform.value); } else {   this.authprovider.getretailerinvite(this.getinvitationform.value.email)     .subscribe(invitesnapshot => {       if (invitesnapshot){         this.invitation = invitesnapshot[0];       } else {         console.log("no email found...");       }        loading.dismiss().then( () => {          this.nextslide();        });   }); } loading.present();

}

the authprovider ts:

getretailerinvite(email: string): firebaselistobservable<any> { return this.afdatabase.list('/invite', {   query: {     orderbychild: 'email',     equalto: email,     limittofirst: 1   } })

}

everytime request returns ‘not found’ … although email id exists in database in firebasei wanted understand wht missing? database reference or logic?

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